Dr. John Burba PATENT DIRECTORY

Directory of Patents

• Remediation of physiologically active compounds from waste water

  Publication number: 20200140290

  Abstract: The present invention is directed to the removal of one or more selected target materials, in particular a physiologically active compound contaminant, from various streams using a rare earth fixing agent.

  Type: Application

  Filed: May 29, 2019

  Publication date: May 7, 2020

  Applicant: Secure Natural Resources LLC

  Inventors: John L. Burba, Charles F. Whitehead, Carl R. Hassler, Robert Cable

• Hydrometallurgical process and method for recovering metals

  Publication number: 20190136340

  Abstract: A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering valuable metals.

  Type: Application

  Filed: December 25, 2018

  Publication date: May 9, 2019

  Inventor: John L. Burba, III

• Hydrometallurgical process and method for recovering metals

  Patent number: 10179942

  Abstract: A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering valuable metals.

  Type: Grant

  Filed: December 2, 2014

  Date of Patent: January 15, 2019

  Assignee: Secure Natural Resources LLC

  Inventor: John L. Burba, III

• Safe Battery Solvents

  Publication number: 20170110761

  Abstract: An ion transporting solvent for use with batteries can be improved by simultaneously shortening a phosphazene compound's pendent groups, eliminating most or all of the distal ion carriers, and randomizing the solvent molecules so as to intentionally disrupt symmetry to the maximum degree possible. The combination of these strategies dramatically improves battery performance to the point where the performance recorded is comparable to batteries using conventional organic solvents.

  Type: Application

  Filed: December 27, 2016

  Publication date: April 20, 2017

  Applicant: PRINCESS ENERGY SYSTEMS, INC.

  Inventors: John L. Burba, III, Mason K. Harrup, Thomas A. Luther

  

   

   

   

• Safe Battery Solvents

  Publication number: 20160294013

  Abstract: An ion transporting solvent for use with batteries can be improved by simultaneously shortening a phosphazene compound's pendent groups, eliminating most or all of the distal ion carriers, and randomizing the solvent molecules so as to intentionally disrupt symmetry to the maximum degree possible. The combination of these strategies dramatically improves battery performance to the point where the performance recorded is comparable to batteries using conventional organic solvents.

  Type: Application

  Filed: June 7, 2016

  Publication date: October 6, 2016

  Applicant: PRINCESS ENERGY SYSTEMS, INC.

  Inventors: John L. Burba, III, Mason K. Harrup, Thomas A. Luther

• Safe Battery Solvents

  Publication number: 20160285132

  Abstract: An ion transporting solvent for use with batteries can be improved by simultaneously shortening a phosphazene compound's pendent groups, eliminating most or all of the distal ion carriers, and randomizing the solvent molecules so as to intentionally disrupt symmetry to the maximum degree possible. The combination of these strategies dramatically improves battery performance to the point where the performance recorded is comparable to batteries using conventional organic solvents.

  Type: Application

  Filed: June 7, 2016

  Publication date: September 29, 2016

  Applicant: PRINCESS ENERGY SYSTEMS, INC.

  Inventors: John L. Burba, III, Mason K. Harrup, Thomas A. Luther

• Hydrometallurgical process and method for recovering metals

  Publication number: 20150197826

  Abstract: A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering valuable metals.

  Type: Application

  Filed: December 2, 2014

  Publication date: July 16, 2015

  Inventor: John L. Burba

• Lithium metal dispersion in secondary battery anodes

  Patent number: 8980477

  Abstract: The present invention is a secondary battery having a high specific capacity and good cycleability, and that can be used safely. The secondary battery is manufactured to include an anode formed from a host material capable of absorbing and desorbing lithium in an electrochemical system such as a carbonaceous material, and lithium metal dispersed in the host material. The anodes of the invention are combined with a cathode including an active material, a separator that a separates the cathode and the anode, and an electrolyte in communication with the cathode and the anode. The present invention also includes a method of preparing an anode and a method of operating a secondary battery including the anode of the invention.

  Type: Grant

  Filed: December 20, 2002

  Date of Patent: March 17, 2015

  Assignee: FMC Corporation

  Inventors: Yuan Gao, John L. Burba, III, John F. Engel, Marina V. Yakovleva

• Hydrometallurgical process and method for recovering metals

  Patent number: 8936770

  Abstract: A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering valuable metals.

  Type: Grant

  Filed: January 20, 2011

  Date of Patent: January 20, 2015

  Assignee: Molycorp Minerals, LLC

  Inventor: John L. Burba, III

• Sorbent for Lithium Extraction

  Publication number: 20140239224

  Abstract: This invention relates to a method for preparing a lithium aluminate intercalate (LAI) matrix solid and methods for the selective extraction and recovery of lithium from lithium containing solutions, including brines. The method for preparing the LAI matrix solid includes reacting aluminum hydroxide and a lithium salt for form the lithium aluminate intercalate, which can then be mixed with up to about 25% by weight of a polymer to form the LAI matrix.

  Type: Application

  Filed: May 5, 2014

  Publication date: August 28, 2014

  Applicant: Simbol Inc.

  Inventors: John L. Burba, Ray F. Stewart, Brian E. Viani, Stephen Harrison, Christine ellen Vogdes, John Galil Salim Lahlouh

• Filter substrate composition

  Patent number: 8809229

  Abstract: An aggregate composition and process for making the aggregate composition. The aggregate composition includes an insoluble rare earth-containing compound and a polymer binder. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from cerium carbonate or a cerium salt. In a specific embodiment, the aggregate composition consists essentially of one or more cerium oxides, the polymer binder and optionally a flow aid. A process for making the composition includes mixing the insoluble rare earth-containing compound with a polymer binder to form a mixture, and subjecting the mixture to mechanical, chemical and/or thermal treatment to adhere the rare earth compound to the polymer binder. The aggregate composition can be used in a variety of fluid treatment applications to remove one or more chemical and biological contaminants in a fluid.

  Type: Grant

  Filed: September 9, 2013

  Date of Patent: August 19, 2014

  Assignee: Molycorp Minerals, LLC

  Inventor: John L. Burba

• Sorbent for lithium extraction

  Patent number: 8753594

  Abstract: This invention relates to a method for preparing a lithium aluminate intercalate (LAI) matrix solid and methods for the selective extraction and recovery of lithium from lithium containing solutions, including brines. The method for preparing the LAI matrix solid includes reacting aluminum hydroxide and a lithium salt for form the lithium aluminate intercalate, which can then be mixed with up to about 20% by weight of a polymer to form the LAI matrix.

  Type: Grant

  Filed: November 12, 2010

  Date of Patent: June 17, 2014

  Assignee: Simbol, Inc.

  Inventors: John L. Burba, III, Ray F. Stewart, Brian E. Viani, Stephen Harrison, Christine Ellen Vogdes, John Galil Salim Lahlouh

  

   

   

• Composition and process for making the composition

  Publication number: 20140007773

  Abstract: An aggregate composition and process for making the aggregate composition. The aggregate composition includes an insoluble rare earth-containing compound and a polymer binder. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from cerium carbonate or a cerium salt. In a specific embodiment, the aggregate composition consists essentially of one or more cerium oxides, the polymer binder and optionally a flow aid. A process for making the composition includes mixing the insoluble rare earth-containing compound with a polymer binder to form a mixture, and subjecting the mixture to mechanical, chemical and/or thermal treatment to adhere the rare earth compound to the polymer binder. The aggregate composition can be used in a variety of fluid treatment applications to remove one or more chemical and biological contaminants in a fluid.

  Type: Application

  Filed: September 9, 2013

  Publication date: January 9, 2014

  Applicant: MOLYCORP MINERALS, LLC

  Inventor: John L. Burba

• Composition for treating a fluid

  Patent number: 8349764

  Abstract: An aggregate composition and process for making the aggregate composition. The aggregate composition includes an insoluble rare earth-containing compound and a polymer binder. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from cerium carbonate or a cerium salt. In a specific embodiment, the aggregate composition consists essentially of one or more cerium oxides, the polymer binder and optionally a flow aid. A process for making the composition includes mixing the insoluble rare earth-containing compound with a polymer binder to form a mixture, and subjecting the mixture to mechanical, chemical and/or thermal treatment to adhere the rare earth compound to the polymer binder. The aggregate composition can be used in a variety of fluid treatment applications to remove one or more chemical and biological contaminants in a fluid.

  Type: Grant

  Filed: October 31, 2007

  Date of Patent: January 8, 2013

  Assignee: Molycorp Minerals, LLC

  Inventor: John L. Burba, III

• Ceria for use as an antimicrobial barrier and disinfectant in a wound dressing

  Publication number: 20120328681

  Abstract: The present invention relates to protecting a human from an infection using a disinfecting agent as described herein and a method for use thereof, more particularly to a rare earth-containing device for protecting a wound and a method for use thereof.

  Type: Application

  Filed: September 10, 2012

  Publication date: December 27, 2012

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: Carl R. Hassler, John L. Burba, Charles Whitehead, Joe Pascoe

• Process and apparatus for treating a gas containing a contaminant

  Patent number: 8252087

  Abstract: Apparatus, process and article for treating a gas containing one or more of a chemical and/or biological contaminant. The process includes contacting the gas with an aggregate composition comprising an insoluble rare earth-containing compound to form a gas depleted of chemical and active biological contaminants. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. The composition comprises no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate has been sintered. A suitable insoluble cerium-containing compound can be derived from cerium carbonate. In one embodiment, the aggregate composition consists essentially of one or more cerium oxides, and optionally, a binder. Although intended for a variety of fluid treatment applications, such applications specifically include the treatment of breathing gases such as air that may contain chemical and/or biological contaminants.

  Type: Grant

  Filed: October 31, 2007

  Date of Patent: August 28, 2012

  Assignee: Molycorp Minerals, LLC

  Inventors: John L. Burba, III, Tim L. Oriard

• Method and apparatus for removing arsenic from an arsenic bearing material

  Publication number: 20120138528

  Abstract: A method and apparatus for removing arsenic from an arsenic-bearing material. The method includes the steps of contracting an arsenic-bearing material with an arsenic leaching agent to form an arsenic-containing solution and arsenic-depleted solids. The leaching agent can be an inorganic salt, an inorganic acid, an organic acid, and/or an alkaline agent. The arsenic-depleted solids are separated from the arsenic-containing solution, which is contacted with a fixing agent to produce an arsenic-depleted solution and an arsenic-laden fixing agent. The fixing agent comprises a rare earth-containing compound that can include cerium, lanthanum, or praseodymium. The fixing agent is then separated from the arsenic-depleted solution. A recoverable metal in the arsenic-depleted solids, arsenic-containing solution or arsenic-depleted solution can be separated and recovered. Recoverable metals can include metal from Group IA, Group IIA, Group VIII and the transition metals.

  Type: Application

  Filed: December 18, 2007

  Publication date: June 7, 2012

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: John L. Burba, III, Carl R. Hassler, C. Brock O'Kelley, Charles F. Whitehead

• Method and apparatus for removing arsenic from a solution

  Publication number: 20120138530

  Abstract: A method and apparatus for separating arsenic from an aqueous solution containing arsenic. The method includes the steps of contacting an arsenic-containing solution with a first portion of fixing agent to remove at least a portion of the arsenic. An arsenic-laden fixing agent is separated from the solution and the partially depleted solution is contacted with a second portion of fixing agent. The fixing agent can include a high surface area insoluble compound containing one or more of cerium, lanthanum, or praseodymium. Following removal of the arsenic, the arsenic-depleted solution can be further processed to separate a recoverable metal through metal refining. The arsenic-laden fixing agent can be filtered to recover and recycle a filtrate to the solution for additional treatment, as well as using a partially saturated fixing agent to remove arsenic from fresh solution.

  Type: Application

  Filed: December 18, 2007

  Publication date: June 7, 2012

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: John L. Burba, III, Carl R. Hassler, C. Brock O'Kelley, Charles F. Whitehead

• Method and apparatus for recovering a metal and separating arsenic from an arsenic containing solution

  Publication number: 20120138529

  Abstract: A method and apparatus for recovering a metal and separating arsenic from an arsenic-containing solution. The method includes contacting the arsenic-containing solution with a fixing agent that comprises a rare earth compound to produce an arsenic-depleted solution and an arsenic-laden fixing agent. The fixing agent comprises a rare earth-containing compound that can include cerium, lanthanum, or praseodymium. The fixing agent is separated from the arsenic-depleted solution and a recoverable metal is separated from one or more of the arsenic-containing solution and the arsenic-depleted solution. Recoverable metals can include metal from Group IA, Group IIA, Group VIII and the transition metals. The arsenic-containing solution can be formed by contacting an arsenic-containing material with a leaching agent. Arsenic-depleted solids formed during the leach can also be separated and recovered.

  Type: Application

  Filed: December 18, 2007

  Publication date: June 7, 2012

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: John L. Burba, III, Carl R. Hassler, C. Brock O'Kelley, Charles F. Whitehead

• Agglomeration of high surface area rare earths

  Publication number: 20120031827

  Abstract: The subject invention relates generally to friable metal oxide agglomerates and specifically to agglomerates containing high surface area rare earth-containing materials and a polymeric binder.

  Type: Application

  Filed: August 8, 2011

  Publication date: February 9, 2012

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: John L. Burba, Carl R. Hassler, Charles F. Whitehead, Joseph A. Lupo, John Lahlouh, Chris Vogdes, Brandt Wright

• Methods and devices for enhancing contaminant removal by rare earths

  Publication number: 20110309017

  Abstract: Embodiments are provided for removing a variety of contaminants using both rare earth and non-rare earth-containing treatment elements.

  Type: Application

  Filed: April 13, 2011

  Publication date: December 22, 2011

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: Carl R. Hassler, John L. Burba, III, Charles F. Whitehead, Joseph Lupo, Timothy L. Oriard

• Remediation of physiologically active compounds from waste water

  Publication number: 20110303871

  Abstract: The present invention is directed to the removal of one or more selected target materials, in particular a physiologically active compound contaminant, from various streams using a rare earth fixing agent.

  Type: Application

  Filed: June 13, 2011

  Publication date: December 15, 2011

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: John L. Burba, Charles F. Whitehead, Carl R. Hassler, Robert Cable

• Apparatus for treating a flow of an aqueous solution containing arsenic

  Patent number: 8066874

  Abstract: An apparatus for treating an aqueous solution containing arsenic. The apparatus comprises a container that includes a housing, an inlet located at a first end of the housing and an outlet located at a second end opposite the first end. An outer wall extends between the first and second ends and enclosing a fluid flow path between the inlet and the outlet and an arsenic fixing agent is disposed in the fluid flow path. The arsenic fixing agent can include an insoluble rare earth-containing compound, more specifically, a compound comprising one or more of cerium, lanthanum, or praseodymium. The inlet and the outlet are adapted to be closed during transport and storage. The container is adapted to be sealed for long term disposal after exposure to an aqueous solution containing arsenic.

  Type: Grant

  Filed: October 31, 2007

  Date of Patent: November 29, 2011

  Assignee: Molycorp Minerals, LLC

  Inventors: John L. Burba, III, Carl R. Hassler, C. Brock O'Kelley, Joseph A. Lupo, Joseph R. Pascoe

• Hydrometallurgical process and method for recovering metals

  Publication number: 20110182786

  Abstract: A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering valuable metals.

  Type: Application

  Filed: January 20, 2011

  Publication date: July 28, 2011

  Applicant: MOLYCORP MINERALS, LLC

  Inventor: John L. Burba, III

• Apparatus and process for treating an aqueous solution containing biological contaminants

  Publication number: 20110033337

  Abstract: Process, apparatus and article for treating an aqueous solution containing biological contaminants. The process includes contacting an aqueous solution containing a biological contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of active biological contaminants. The aggregate includes more than 10.01% by weight of the insoluble rare earth-containing compound. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, a cerium oxalate or a cerium salt. The composition can consist essentially of cerium oxides, and optionally, a binder and/or flow aid. The aggregate includes no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate is to be sintered.

  Type: Application

  Filed: June 11, 2010

  Publication date: February 10, 2011

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: John L. Burba, III, Tim L. Oriard

• Ceria for use as an antimicrobial barrier and disinfectant in a wound dressing

  Publication number: 20110002971

  Abstract: The present invention relates to protecting a human from an infection using a disinfecting agent as described herein and a method for use thereof, more particularly to a rare earth-containing device for protecting a wound and a method for use thereof.

  Type: Application

  Filed: July 6, 2010

  Publication date: January 6, 2011

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: Carl R. Hassler, John L. Burba, Charles Whitehead, Joe Pascoe

• Apparatus and process for treating an aqueous solution containing biological contaminants

  Publication number: 20100255559

  Abstract: Process, apparatus and article for treating an aqueous solution containing biological contaminants. The process includes contacting an aqueous solution containing a biological contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of active biological contaminants. The aggregate includes more than 10.01% by weight of the insoluble rare earth-containing compound. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, a cerium oxalate or a cerium salt. The composition can consist essentially of cerium oxides, and optionally, a binder and/or flow aid. The aggregate includes no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate is to be sintered.

  Type: Application

  Filed: June 11, 2010

  Publication date: October 7, 2010

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: John L. Burba, III, Tim L. Oriard

• Apparatus and process for treating an aqueous solution containing biological contaminants

  Publication number: 20100243542

  Abstract: Process, apparatus and article for treating an aqueous solution containing biological contaminants. The process includes contacting an aqueous solution containing a biological contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of active biological contaminants. The aggregate includes more than 10.01% by weight of the insoluble rare earth-containing compound. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, a cerium oxalate or a cerium salt. The composition can consist essentially of cerium oxides, and optionally, a binder and/or flow aid. The aggregate includes no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate is to be sintered.

  Type: Application

  Filed: June 11, 2010

  Publication date: September 30, 2010

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: John L. Burba, III, Tim L. Oriard

• Apparatus and process for treating an aqueous solution containing chemical contaminants

  Publication number: 20100168498

  Abstract: Apparatus, process and article for treating an aqueous solution containing a chemical contaminant. The process includes contacting an aqueous solution containing a chemical contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of chemical contaminants. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, cerium oxalate and/or a cerium salt. The aggregate composition can include more than 10.01% by weight of the insoluble rare earth-containing compound, and in a particular embodiment consists essentially of one or more cerium oxides, and optionally a binder and/or flow aid. Although intended for a variety of fluid treatment applications, such applications specifically include removing or detoxifying chemical contaminants in water.

  Type: Application

  Filed: March 10, 2010

  Publication date: July 1, 2010

  Applicant: MOLYCORP MINERALS, LLC

  Inventors: John L. Burba, III, Richard D. Witham

• Apparatus and process for treating an aqueous solution containing biological contaminants

  Publication number: 20090107925

  Abstract: Process, apparatus and article for treating an aqueous solution containing biological contaminants. The process includes contacting an aqueous solution containing a biological contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of active biological contaminants. The aggregate includes mote than 10.01% by weight of the insoluble rare earth-containing compound. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, a cerium oxalate or a cerium salt. The composition can consist essentially of cerium oxides, and optionally, a binder and/or flow aid. The aggregate includes no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate is to be sintered.

  Type: Application

  Filed: October 31, 2007

  Publication date: April 30, 2009

  Applicant: CHEVRON U.S.A. INC.

  Inventors: John L. Burba, III, Tim L. Oriard

• Process and apparatus for treating a gas containing a contaminant

  Publication number: 20090112043

  Abstract: Apparatus, process and article for treating a gas containing one or more of a chemical and/or biological contaminant. The process includes contacting the gas with an aggregate composition comprising an insoluble rare earth-containing compound to form a gas depleted of chemical and active biological contaminants. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. The composition comprises no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate has been sintered. A suitable insoluble cerium-containing compound can be derived from cerium carbonate. In one embodiment, the aggregate composition consists essentially of one or more cerium oxides, and optionally, a binder. Although intended for a variety of fluid treatment applications, such applications specifically include the treatment of breathing gases such as air that may contain chemical and/or biological contaminants.

  Type: Application

  Filed: October 31, 2007

  Publication date: April 30, 2009

  Applicant: CHEVRON U.S.A. INC.

  Inventors: John L. Burba, III, Tim L. Oriard

• Apparatus and process for treating an aqueous solution containing chemical contaminants

  Publication number: 20090107919

  Abstract: Apparatus, process and article for treating an aqueous solution containing a chemical contaminant. The process includes contacting an aqueous solution containing a chemical contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of chemical contaminants. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, cerium oxalate and/or a cerium salt. The aggregate composition can include more than 10.01% by weight of the insoluble rare earth-containing compound, and in a particular embodiment consists essentially of one or more cerium oxides, and optionally a binder and/or flow aid. Although intended for a variety of fluid treatment applications, such applications specifically include removing or detoxifying chemical contaminants in water.

  Type: Application

  Filed: October 31, 2007

  Publication date: April 30, 2009

  Applicant: CHEVRON U.S.A. INC.

  Inventors: John L. Burba, III, Richard D. Witham

• Composition and process for making the composition

  Publication number: 20090111689

  Abstract: An aggregate composition and process for making the aggregate composition. The aggregate composition includes an insoluble rare earth-containing compound and a polymer binder. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from cerium carbonate or a cerium salt. In a specific embodiment, the aggregate composition consists essentially of one or more cerium oxides, the polymer binder and optionally a flow aid. A process for making the composition includes mixing the insoluble rare earth-containing compound with a polymer binder to form a mixture, and subjecting the mixture to mechanical, chemical and/or thermal treatment to adhere the rare earth compound to the polymer binder. The aggregate composition can be used in a variety of fluid treatment applications to remove one or more chemical and biological contaminants in a fluid.

  Type: Application

  Filed: October 31, 2007

  Publication date: April 30, 2009

  Applicant: CHEVRON U.S.A. INC.

  Inventor: John L. Burba, III

• Apparatus for treating a flow of an aqueous solution containing arsenic

  Publication number: 20080156734

  Abstract: An apparatus for treating an aqueous solution containing arsenic. The apparatus comprises a container that includes a housing, an inlet located at a first end of the housing and an outlet located at a second end opposite the first end. An outer wall extends between the first and second ends and enclosing a fluid flow path between the inlet and the outlet and an arsenic fixing agent is disposed in the fluid flow path. The arsenic fixing agent can include an insoluble rare earth-containing compound, more specifically, a compound comprising one or more of cerium, lanthanum, or praseodymium. The inlet and the outlet are adapted to be closed during transport and storage. The container is adapted to be sealed for long term disposal after exposure to an aqueous solution containing arsenic.

  Type: Application

  Filed: October 31, 2007

  Publication date: July 3, 2008

  Applicant: CHEVRON U.S.A. INC.

  Inventors: John L. Burba, Carl R. Hassler, C. Brock O'Kelley, Joseph A. Lupo, Joseph R. Pascoe

• Lithium metal dispersion in secondary battery anodes

  Patent number: 7276314

  Abstract: The present invention is a secondary battery having a high specific capacity and good cycleability, and that can be used safely. The secondary battery is manufactured to include an anode formed from a host material capable of absorbing and desorbing lithium in an electrochemical system such as a carbonaceous material, and lithium metal dispersed in the host material. The freshly prepared anodes of the invention are combined with a positive electrode including an active material, a separator that a separates the positive electrode and the negative electrode, and an electrolyte in communication with the positive electrode and the negative electrode. The present invention also includes a method of preparing a freshly prepared anode and a method of operating a secondary battery including the anode of the invention.

  Type: Grant

  Filed: January 16, 2004

  Date of Patent: October 2, 2007

  Assignee: FMC Corporation

  Inventors: Yuan Gao, John L. Burba, III

• Lithium cobalt oxides and methods of making same

  Patent number: 6932922

  Abstract: The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula LiwCo1?xAxO2+y wherein 0.96?w?1.05, 0?x?0.05, ?0.02?y?0.02 and A is one or more dopants. The lithium cobalt oxides of the invention preferably have a position within the principal component space defined by the relationship axi+byi?c, wherein xi={right arrow over (S)}i•{right arrow over (P)}c1; yi={right arrow over (S)}i•{right arrow over (P)}c2; the vector {right arrow over (S)}i is the x-ray spectrum for the LiwCo1?xAxO2+y compound; the vectors {right arrow over (P)}c1 and {right arrow over (P)}c2 defining the principal component space are determined by measuring the x-ray powder diffraction values {right arrow over (S)}i between 15° and 120° using a 0.

  Type: Grant

  Filed: April 25, 2003

  Date of Patent: August 23, 2005

  Assignee: FMC Corporation

  Inventors: Yuan Gao, Marina Yakovleva, John L. Burba, III, John F. Engel

• Method and apparatus to improve perforating effectiveness using a unique multiple point initiated shaped charge perforator

  Patent number: 6925924

  Abstract: A non-linear shaped charge perforator for use in perforating an oil and gas formation into which a wellbore has been drilled comprises a monolithic, axisymmetric metal case in which is disposed a main explosive charge between the front of the case, which is closed with a concave metal liner, and the closed back end of the case. The main explosive charge contains multiple initiation points, preferably two initiation points located about 180° apart on the outside surface of the charge, so that when the perforator is detonated the main charge is initiated such that the metal liner is collapsed into a non-circular jet, preferably a fan-shaped jet, that pierces the casing of the wellbore and forms non-circular perforations, preferably slot-shaped perforations, in the surrounding formation.

  Type: Grant

  Filed: October 14, 2003

  Date of Patent: August 9, 2005

  Assignee: Molycorp Inc.

  Inventors: Ernest L. Baker, David C. Daniel, David S. Wesson, John L. Burba, III, Arthur S. Daniels, Robert E. Davis

• Lithium metal dispersion in secondary battery anodes

  Publication number: 20040146784

  Abstract: The present invention is a secondary battery having a high specific capacity and good cycleability, and that can be used safely. The secondary battery is manufactured to include an anode formed from a host material capable of absorbing and desorbing lithium in an electrochemical system such as a carbonaceous material, and lithium metal dispersed in the host material. The freshly prepared anodes of the invention are combined with a positive electrode including an active material, a separator that a separates the positive electrode and the negative electrode, and an electrolyte in communication with the positive electrode and the negative electrode. The present invention also includes a method of preparing a freshly prepared anode and a method of operating a secondary battery including the anode of the invention.

  Type: Application

  Filed: January 16, 2004

  Publication date: July 29, 2004

  Inventors: Yuan Gao, John L. Burba

• Lithium metal dispersion in secondary battery anodes

  Patent number: 6706447

  Abstract: The present invention is a secondary battery having a high specific capacity and good cycleability, and that can be used safely. The secondary battery is manufactured to include an anode formed from a host material capable of absorbing and desorbing lithium in an electrochemical system such as a carbonaceous material, and lithium metal dispersed in the host material. The freshly prepared anodes of the invention are combined with a positive electrode including an active material, a separator that a separates the positive electrode and the negative electrode, and an electrolyte in communication with the positive electrode and the negative electrode. The present invention also includes a method of preparing a freshly prepared anode and a method of operating a secondary battery including the anode of the invention.

  Type: Grant

  Filed: December 19, 2001

  Date of Patent: March 16, 2004

  Assignee: FMC Corporation, Lithium Division

  Inventors: Yuan Gao, John L. Burba, III

• Lithium metal dispersion in secondary battery anodes

  Publication number: 20040002005

  Abstract: The present invention is a secondary battery having a high specific capacity and good cycleability, and that can be used safely. The secondary battery is manufactured to include an anode formed from a host material capable of absorbing and desorbing lithium in an electrochemical system such as a carbonaceous material, and lithium metal dispersed in the host material. The anodes of the invention are combined with a cathode including an active material, a separator that a separates the cathode and the anode, and an electrolyte in communication with the cathode and the anode. The present invention also includes a method of preparing an anode and a method of operating a secondary battery including the anode of the invention.

  Type: Application

  Filed: December 20, 2002

  Publication date: January 1, 2004

  Inventors: Yuan Gao, John L. Burba, John F. Engel, Marina V. Yakovleva

• Lithium cobalt oxides and methods of making same

  Publication number: 20030205700

  Abstract: The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula LiwCo1−xAxO2+y wherein 0.96≦w≦1.05, 0≦x≦0.

  Type: Application

  Filed: April 25, 2003

  Publication date: November 6, 2003

  Inventors: Yuan Gao, Marina Yakovleva, John L. Burba, John F. Engel

• Lithium cobalt oxides and methods of making same

  Patent number: 6579475

  Abstract: The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula LiwCo1−xAxO2+y wherein 0.96≦w≦1.05, 0≦x≦0.05, −0.02≦y≦0.02 and A is one or more dopants. The lithium cobalt oxides of the invention preferably have a position within the principal component space defined by the relationship axi+byi≦c, wherein xi={right arrow over (S)}i&Circlesolid;{right arrow over (P)}c1; yi={right arrow over (S)}i&Circlesolid;{right arrow over (P)}c2; the vector {right arrow over (S)}i is the x-ray spectrum for the LiwCo1−xAxO2+y compound; the vectors {right arrow over (P)}c1 and {right arrow over (P)}c2 defining the principal component space are determined by measuring the x-ray powder diffraction values {right arrow over (S)}i between 15° and 120° using a 0.

  Type: Grant

  Filed: December 7, 2000

  Date of Patent: June 17, 2003

  Assignee: FMC Corporation

  Inventors: Yuan Gao, Marina Yakovleva, John L. Burba, III, John F. Engel

• Lithium cobalt oxides and methods of making same

  Publication number: 20020127175

  Abstract: The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula LiwCo1−xAxO2+y wherein 0.96≦w≦1.05, 0≦x≦0.05, −0.02≦y≦0.02 and A is one or more dopants. The lithium cobalt oxides of the invention preferably have a position within the principal component space defined by the relationship axi+byi≦c, wherein xi={right arrow over (S)}i&Circlesolid;{right arrow over (P)}c1; yi={right arrow over (S)}i&Circlesolid;{right arrow over (P)}c2; the vector {right arrow over (S)}i is the x-ray spectrum for the LiwCo1−xAxO2+y compound; the vectors {right arrow over (P)}c1 and {right arrow over (P)}c2 defining the principal component space are determined by measuring the x-ray powder diffraction values {right arrow over (S)}i between 15° and 120° using a 0.

  Type: Application

  Filed: December 7, 2000

  Publication date: September 12, 2002

  Applicant: FMC Corporation

  Inventors: Yuan Gao, Marina Yakovleva, John L. Burba, John F. Engel

• Lithium metal dispersion in secondary battery anodes

  Publication number: 20020119373

  Abstract: The present invention is a secondary battery having a high specific capacity and good cycleability, and that can be used safely. The secondary battery is manufactured to include an anode formed from a host material capable of absorbing and desorbing lithium in an electrochemical system such as a carbonaceous material, and lithium metal dispersed in the host material. The freshly prepared anodes of the invention are combined with a positive electrode including an active material, a separator that a separates the positive electrode and the negative electrode, and an electrolyte in communication with the positive electrode and the negative electrode. The present invention also includes a method of preparing a freshly prepared anode and a method of operating a secondary battery including the anode of the invention.

  Type: Application

  Filed: December 19, 2001

  Publication date: August 29, 2002

  Applicant: FMC Corporation

  Inventors: Yuan Gao, John L. Burba

• Composition for the recovery of lithium values from brine and process of making/using said composition

  Patent number: 6280693

  Abstract: The present invention is a composition comprising pellets, each of said pellets consisting essentially of an integral mass of polycrystalline material of randomly disposed crystals of hydrated alumina infused with an amount of LiX to produce LiX/Al(OH)3 having up to a mol fraction of 0.33 of LiX in the so-produced LiX/Al(OH)3, wherein LiX is at least one compound selected from the group consisting of Li hydroxide, Li halide, Li nitrate, Li sulfate, and Li bicarbonate. The present invention further includes methods of preparing the composition and methods of recovery lithium values from brine using the composition.

  Type: Grant

  Filed: September 20, 1996

  Date of Patent: August 28, 2001

  Assignee: FMC Corporation

  Inventors: William C. Bauman, John L. Burba, III

• Process for modifying the rheology of polyolefins

  Patent number: 6077914

  Abstract: The molecular weight of a polyolefin such as polypropylene is reduced, as evidenced by lowered viscosity and increased melt flow rate, by treatment with an inorganic peroxygen selected from metal persulfates, ammonium persulfates, and any mixtures thereof. The treatment avoids or minimizes the color or odor attendant treatment with organic peroxygens and the toxic products of organic persulfate decomposition, and avoids the special handling required with organic peroxides.

  Type: Grant

  Filed: February 19, 1998

  Date of Patent: June 20, 2000

  Assignee: FMC Corporation

  Inventors: Nancy D. Arabinick, John L. Burba, III, William O. Dalton

• Elastic solids having reversible stress-induced fluidity

  Patent number: 5721198

  Abstract: Elastic solids having reversible stress-induced fluidity are prepared, e.g., by combining liquid formulations with a crystalline mixed metal hydroxide conforming substantially to the formulaLi.sub.m D.sub.d T(OH).sub.(m+2d+3+n.multidot.a) (A.sup.n).sub.a .multidot.xH.sub.2 Owhere m is amount of Li, d is amount of divalent metal D, T is a trivalent metal, A represents at least one anion or negative-valence radical of valence n and a is the amount of A, and xH.sub.2 O represents excess waters of hydration, if any. These make useful coatings.The instantly reversible fluidization of these unique elastic solids may be expressed as:.sigma.=k.sub..alpha. .epsilon. when .epsilon.<F, for the solid phase; and.sigma.=f(d.epsilon.'/dt) when .epsilon.'>F, (this equation represents a generalized form for the usual theological equations); for a cycle of .epsilon., -xF <.epsilon.<xF, and when .epsilon.' equals 0 the liquid phase changes back to the solid phase, andwhere the symbol .sigma. represents stress; k.

  Type: Grant

  Filed: August 18, 1995

  Date of Patent: February 24, 1998

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Christopher P. Christenson

• Polymeric composites with crystalline mixed metal hydroxide particles dispersed therein

  Patent number: 5658653

  Abstract: The invention provides composites of organic polymeric compositions including a matrix of an organic polymer and a filler distributed throughout the matrix, the flier being present in the matrix substantially as separate particles, each about the fundamental particle size of the filler. The fillers are unique mixed metal hydroxide compositions that are obtainable in sub-micron size particles. These particles are layered and have a BET specific surface area in excess of about 100 m.sup.2 /g. An anion of the particulates is selected to be compatible with the organic polymer thereby providing ease of dispersion of the filler particles throughout the polymer matrix.

  Type: Grant

  Filed: November 23, 1994

  Date of Patent: August 19, 1997

  Assignee: The Dow Chemical Company

  Inventors: Clive P. Bosnyak, John L. Burba, III, Malcolm F. Finlayson, Arthur E. Read, Jr., Chai-Jing Chou

• Pseudoplastic mixed metal layered hydroxide fluid with fluid loss additive and method of use in penetrating the earth

  Patent number: 5658859

  Abstract: The present invention relates to a pseudoplastic fluid composition including water, a mixed metal layered hydroxide dispersed in the water to impart preselected rheological properties to the fluid and a fluid loss additive composition including one or more of a carboxymethyl substituted vegetable starch, a carboxymethylated cellulosic compound or mixtures thereof in an amount effective to inhibit loss of fluid and with the degree of substitution being selected so that the carboxymethyl substituted compound is soluble in the fluid at the concentration of use without materially adversely affecting the rheological properties of the fluid and so that the fluid is resistant to fermentation. The improved composition includes a crosslinked carboxymethylated vegetable starch which has a degree of substitution in the broad range from about 0.3 to about 0.8 and in a narrower range of about 0.4 to about 0.

  Type: Grant

  Filed: January 30, 1996

  Date of Patent: August 19, 1997

  Assignee: Dowell Schlumberger Incorporated

  Inventors: John L. Burba, III, Lindsay J. Fraser

• Recovery of lithium values from brines

  Patent number: 5599516

  Abstract: Pellets of a polycrystalline hydrated alumina, especially Gibbsite, are infused with LiOH to obtain loadings up to 0.33 mol fraction of LiOH in the LiOH/Al(OH).sub.3. The so-prepared material is useful for mixing with a LiX-containing brine solution, producing an interaction of the LiOH infused in the alumina pellets with the X ion (where X represents an acid salt moiety, especially halide) of the LiX-containing brine. The LiX interaction product is efficiently removed from the alumina pellets by water washing, leaving rejuvenated LiOH which can be used in yet another cycling of LiX formation/water removal. A plurality of loading and unloading cycles are achieved, yielding an appreciable amount of the lithium values derived from the brine.

  Type: Grant

  Filed: February 13, 1995

  Date of Patent: February 4, 1997

  Assignee: FMC Corporation

  Inventors: William C. Bauman, John L. Burba, III

• Processes producing methyl mercaptan

  Patent number: 5481042

  Abstract: Described are preferred processes which produce methyl mercaptan from methyl bromide and aqueous mediums of metal hydrosulfide. The processes can be used to simultaneously consume methyl bromide byproduct and aqueous NaSH byproduct while producing methyl mercaptan.

  Type: Grant

  Filed: April 11, 1994

  Date of Patent: January 2, 1996

  Assignee: Great Lakes Chemical Corp.

  Inventors: John L. Burba, III, James T. Ayres, Preston E. Spires, John E. Hill

• Elastic solids having reversible strain-induced fluidity

  Patent number: 5443761

  Abstract: Elastic solids having reversible stress-induced fluidity are prepared, e.g., by combining liquid formulations with a crystalline mixed metal hydroxide conforming substantially to the formulaLi.sub.m D.sub.d T(OH).sub.(m+2d+3+n.a) (A.sup.n).sub.a.xH.sub.2 Owhere m is amount of Li, d is amount of divalent metal D, T is a trivalent metal, A represents at least one anion or negative-valence radical of valence n and a is the amount of A, and xH.sub.2 O represents excess waters of hydration, if any. These make useful coatings.The instantly reversible fluidization of these unique elastic solids may be expressed as:.tau.=ka.epsilon.,When .epsilon.<F, for the solid phase; and.epsilon.=f(d.epsilon.'/dt)when .epsilon.'<F, (this equation represents a generalized form for the usual rheological equations); for a cycle of .epsilon., -xF<.epsilon.<xF, and when .epsilon.' equals 0 the liquid phase changes back to the solid phase, andwhere the symbol .sigma. represents stress; k.sub.

  Type: Grant

  Filed: October 11, 1991

  Date of Patent: August 22, 1995

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Christopher P. Christenson

• Coating composition comprising solids having reversible stress-induced fluidity

  Patent number: 5418271

  Abstract: Coating formulations which behave as elastic solids having reversible stress-induced fluidity are prepared by creating a fluid having distributed therein effective amounts of ionic charge sites and countercharge sites. For instance, elastic solids having reversible stress-induced fluidity are prepared by combining liquid formulations with a dispersion of a small, but effective, amount of at least one crystalline mixed metal hydroxide conforming substantially to the formulaLi.sub.m D.sub.d T(OH).sub.(m+2d+3+n.multidot.a) (A.sup.n).sub.a .multidot.xH.sub.2 Owhere m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radical of valence n and a is the amount of A, where n is 1 or more, (m+2d+3+n.multidot.a) is equal to or greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration, if any.

  Type: Grant

  Filed: October 11, 1991

  Date of Patent: May 23, 1995

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Peter A. Doty, Christopher P. Christenson, Susan K. Falcone, Andrea H. Hazlitt, Thomas M. Knobel, Wilfred C. Meyer, Arthur E. Read, Jr., Edgar F. Hoy, Avis L. McCrary, Ha Q. Pham, Stanley F. Simpson, Steve A. Sims, Betty J. Smith

• Recovery of lithium values from brines

  Patent number: 5389349

  Abstract: Morphologically altered pellets of a polycrystalline hydrated alumina, intercalated with LiX (where LiX is a lithium salt, preferably LiCl), is prepared by contacting the polycrystalline structure with LiX solution carried in NaCl brine, the LiX creating lithium-specific sites of intercalation in the crystalline structure, and the material is used in a LiX absorption process involving unloading LiX from the pellets, and then passing a LiX-containing brine through the pellets to capture more LiX in the Li-depleted active sites, and repeating the unloading and loading of the LiX a plurality of cycles. The unloaded LiX is collected as crude product which can be concentrated by evaporation and removing precipitated NaCl.

  Type: Grant

  Filed: May 24, 1993

  Date of Patent: February 14, 1995

  Inventors: William C. Bauman, John L. Burba, III

• Mixed metal layered hydroxide hydrophilic organic material as thickeners for water and other hydrophylic fluids

  Patent number: 5308547

  Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.

  Type: Grant

  Filed: November 15, 1991

  Date of Patent: May 3, 1994

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Audrey L. Barnes

• Adducts of clay and activated mixed metal oxides

  Patent number: 5232627

  Abstract: Adducts of clay, especially of the smectite variety, most especially bentonite, are prepared with an effective amount of at least one activated mixed metal oxide or oxy-hydroxide (AHMMO) formed by dehydrating hydrotalcite or a mixture comprising magnesium oxide and aluminum oxide, or a crystalline mixed metal hydroxide conforming substantially to the formulaLi.sub.m D.sub.d T(OH).sub.(m+2d+3+n.a) (A.sup.n).sub.a. xH.sub.2 Owhere m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radical of valence n, where n is 1 or more, (m+2d+3+n.a) is equal to or greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration. These adducts are useful, e.g., in drilling muds and in viscosity modification of a wide variety of fluids.

  Type: Grant

  Filed: April 16, 1991

  Date of Patent: August 3, 1993

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Arthur E. Read, Jr., Edgar F. Hoy

• Mixed metal hydroxide-clay adducts as thickeners for water and other hydrophylic fluids

  Patent number: 5196143

  Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sup.n.sub.a.H.sub.2 O, where x is zero or more representing excess water of hydration, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.

  Type: Grant

  Filed: May 10, 1991

  Date of Patent: March 23, 1993

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Audrey L. Barnes

• Antimicrobial positively charged particles

  Patent number: 5154932

  Abstract: Formulations or products are caused to be active antimicrobials by the addition thereto of at least one effective amount of at least one crystalline mixed metal hydroxide (MMOH) conforming substantially to the formulaLi.sub.m D.sub.d T(OH) (m+2d+3+na) (A.sup.n).sub.a.xH.sub.2 Owhere m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radical, (m+2d+3+na) is equal or to greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration. The MMOH forms an adduct with, an coats, the microbes, thereby deactivating the microbes.

  Type: Grant

  Filed: September 4, 1990

  Date of Patent: October 13, 1992

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, John L. Alexander, Arthur E. Read, Jr., Wilfred W. Wilson

• Mixed metal hydroxide containing a dispersant

  Patent number: 5094778

  Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.J.sup.n where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.

  Type: Grant

  Filed: May 16, 1990

  Date of Patent: March 10, 1992

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Audrey L. Barnes

• Layered mixed metal hydroxides made in non-aqueous media

  Patent number: 5084209

  Abstract: Crystalline layered mixed metal hydroxides (LMMHs) which are substantially free of unbound water and which conform substantially to the general formulaLi.sub.m D.sub.d T(OH).sub.(3+m+d),wherem represents an amount of Li of from 0 to 3,D represents a divalent metal cation, and d represents an amount of D of from 0 to 8.0,T represents a trivalent metal cation, and (3+m+d) represents an amount which substantially satisfies the valence requirements of Li, D and T, andwhere m+d does not equal zero,are prepared, in an organic reaction medium which is essentially free of unbound water, by mixing predetermined metal organo compounds in predetermined ratios and reacting the metal organo compounds with at least one reagent which supplies OH.sup.- ions to replace the beginning anions in the mixture of metal compounds.A preferred LMMH is one which conforms substantially to the generic formula Mg.sub.d Al(OH).sub.(3+d), where d represents the amount of Mg per each unit of Al.

  Type: Grant

  Filed: November 6, 1990

  Date of Patent: January 28, 1992

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Steve A. Sims, Thomas M. Knobel

• Viscosity-modifiers for aqueous-based functional products containing mixed metal hydroxides

  Patent number: 5015409

  Abstract: Aqueous-based functional products or corrosive products such as cleansers, household products, commercial products, and personal care products are thickened or viscosity-modified by the addition of at least a small, but effective, amount of at least one crystalline mixed metal hydroxide conforming substantially to the formulaLi.sub.m D.sub.d T(OH).sub.(m+2d+3+n.a) A.sub.a.sup.n.xH.sub.2 Owhere m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radial of valence n, where n is 1 or more, (m+2d+3+n.a) is equal to or greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration.

  Type: Grant

  Filed: March 11, 1988

  Date of Patent: May 14, 1991

  Assignee: The Dow Chemical Company

  Inventors: Arthur E. Read, Jr., John L. Burba, III, Peter A. Doty, Clarence R. Crabb

   

   

• Mixed metal hydroxides for thickening water or hydrophylic fluids

  Patent number: 4990268

  Abstract: Novel monodispersed crystalline mixed metal layered hydroxide compounds of the general formula are prepared:Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where m is an amount from zero to 1; D is a divalent metal; d is the amount of D ions of from zero to 4; T is a trivalent metal; A represents anions or negative-valence radicals of valence n; na is from zero to -3; (m+d) is greater than zero; and (m+2d+3+na) is equal to or greater than 3. The D metal is preferably Mg and the T metal is preferably Al. These compounds are useful as gelling agents which impart beneficial thixotropic properties to various fluids, such as drilling fluids, especially when employed along with fluid loss agents.

  Type: Grant

  Filed: June 9, 1987

  Date of Patent: February 5, 1991

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Greene W. Strother

• Intercalations of crystalline lithium aluminates

  Patent number: 4910246

  Abstract: Useful compositions are prepared by incorporating into organic materials, crystalline lithium aluminates which conform substantially to the empirical formula(LiA.sub.x).sub.y.2Al(OH).sub.3.nH.sub.2 Owhere A represents one or more anions and/or negative-valence radicals,where x represents a quantity of A ions and/or radicals sufficient to substantially satisfy the valence requirements of the Li,where y is a numerical value sufficient to maintain the crystalline structure,and where n represents the number of waters of hydration, if any.

  Type: Grant

  Filed: November 23, 1987

  Date of Patent: March 20, 1990

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, William C. Bauman

• Intercalations of crystalline lithium aluminates

  Patent number: 4812245

  Abstract: Useful compositions are prepared by incorporating into organic materials, crystalline lithium aluminates which conform substantially to the empirical formula(LiA.sub.x).sub.y.2Al(OH).sub.3.nH.sub.2 Owhere A represents one or more anions and/or negative-valence radicals,where x represents a quantity of A ions and/or radicals sufficient to substantially satisfy the valence requirements of the Li,where y is a numerical value sufficient to maintain the crystalline structure,and where n represents the number of waters of hydration, if any.

  Type: Grant

  Filed: April 14, 1986

  Date of Patent: March 14, 1989

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, William C. Bauman

  

   

   

• Mixed metal hydroxide-clay adducts as thickeners for water and other hydrophylic fluids

  Patent number: 4790954

  Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.

  Type: Grant

  Filed: May 7, 1987

  Date of Patent: December 13, 1988

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Audrey L. Barnes

• Preparation of precursor materials convertible into bi- and poly-metal spinels

  Patent number: 4748139

  Abstract: A method of producing layered structures of metal hydroxides (one or more metals) free of chloride or chlorine is disclosed. A specific ratio layered structure hydroxide is obtained from mixing first and second metals (respectively in the form of hydroxide, oxyhydroxide carbonate or nitrate as to the first metal and a hydroxide or alkali metal oxide as to the second) in proportions yielding a precipitated layered structure. The precipitators metal hydroxides with any excess of metal over 1:1 forming a segregated phase. Processing involves mixing, maintaining as a suspension up to about 48 hours at temperatures above about 40.degree. C. followed by cooling to recover the precipitate.

  Type: Grant

  Filed: June 2, 1986

  Date of Patent: May 31, 1988

  Assignee: The Dow Chemical Company

  Inventor: John L. Burba, III

• Intercalations of crystalline lithium aluminates

  Patent number: 4727167

  Abstract: Useful compositions are prepared by incorporating into organic materials, crystalline lithium aluminates which conform substantially to the empirical formula(LiA.sub.x).sub.y.2Al(OH).sub.3.nH.sub.2 Owhere A represents one or more anions and/or negative-valence radicals,where x represents a quantity of A ions and/or radicals sufficient to substantially satisfy the valence requirements of the Li,where y is a numerical value sufficient to maintain the crystalline structure,and where n represents the number of waters of hydration, if any.

  Type: Grant

  Filed: April 14, 1986

  Date of Patent: February 23, 1988

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, William C. Bauman

• Mixed metal layered hydroxide-clay adducts as thickeners for water and other hydrophylic fluids

  Patent number: 4664843

  Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.

  Type: Grant

  Filed: July 5, 1985

  Date of Patent: May 12, 1987

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Audrey L. Barnes

• Transition metal aluminates

  Patent number: 4594335

  Abstract: Crystalline transition metal aluminate compounds are formed by reacting transition metal compounds with crystalline hydrous alumina, such as gibbsite, bayerite, norstrandite, boehmite and the like. The crystalline hydrous alumina may be unsupported by a solid substrate or may be supported on a solid substrate or within the pores of a solid substrate, such as a macroporous resin.

  Type: Grant

  Filed: May 11, 1984

  Date of Patent: June 10, 1986

  Assignee: The Dow Chemical Company

  Inventors: John L. Burba, III, Richard A. Wolcott

• Crystalline 3-layer lithium aluminates

  Patent number: 4540509

  Abstract: Ion exchange resins in the base form, e.g., DOWEX MWA--1--OH ion exchange resin, which contain crystalline Al(OH).sub.3, e.g., gibbsite, and/or bayerite, and/or norstrandite, are treated with hot, concentrated LiX solutions (where X is anion) to prepare 3-layer crystalline LiX.2Al(OH).sub.3.nH.sub.2 O in the resin.

  Type: Grant

  Filed: August 30, 1982

  Date of Patent: September 10, 1985

  Assignee: The Dow Chemical Company

  Inventor: John L. Burba, III

• Halide removal from fluid organic materials

  Patent number: 4511710

  Abstract: Unwanted halogen values are removed from liquid resin, organic or hydrocarbon material by adding particulate crystalline lithium aluminate compounds to the liquid material to act as a halogen scavenger, then separating the crystalline aluminate compound from the liquid material.

  Type: Grant

  Filed: June 11, 1984

  Date of Patent: April 16, 1985

  Assignee: The Dow Chemical Company

  Inventors: Chun S. Wang, Kyle B. Benkendorfer, John L. Burba, III

• Higher density ion exchange resins of metal compound precipitated within pores

  Patent number: 4477597

  Abstract: Macroporous ion exchange resins having increased apparent density are provided by incorporating into said resins a weighting agent which is of greater apparent density than the resin itself. Such weighted resins exhibit reduced bed expansion when used with upflow streams, with relatively dense liquids, and with relatively viscous liquids.

  Type: Grant

  Filed: October 2, 1981

  Date of Patent: October 16, 1984

  Assignee: The Dow Chemical Company

  Inventors: John M. Lee, William C. Bauman, Richard A. Wolcott, John L. Burba, III

• Crystalline 2-layer lithium-hydroxy aluminates

  Patent number: 4477367

  Abstract: Crystalline 2-layer LiOH.2Al(OH).sub.3.nH.sub.2 O, preferably supported by a porous substrate, is prepared by treating crystalline 2-layer LiX.2Al(OH).sub.3.nH.sub.2 O, where X is anion, with a LiOH solution or other hydroxide ion source. The so-formed crystalline 2-layer LiOH.2Al(OH).sub.3.nH.sub.2 O is particularly suitable for exchange of the OH ion with larger X' ions to produce other crystalline 2-layer LiX'.2Al(OH).sub.3.nH.sub.2 O.

  Type: Grant

  Filed: August 30, 1982

  Date of Patent: October 16, 1984

  Assignee: The Dow Chemical Company

  Inventor: John L. Burba, III

• Regeneration of crystalline lithium aluminates

  Patent number: 4472362

  Abstract: Crystalline 2-layer lithium aluminate, especially when carried in an ion exchange resin, is regenerated for use as an extractor for Li.sup.+ values in aqueous solution, said regeneration being done by using an aqueous wash containing at least about 800 ppm Li.sup.+ ion.

  Type: Grant

  Filed: August 30, 1982

  Date of Patent: September 18, 1984

  Assignee: The Dow Chemical Company

  Inventor: John L. Burba, III

• Selective extraction of cobalt from ores

  Patent number: 4464348

  Abstract: Cobalt values are extracted from Co-containing ores or minerals by using an aqueous solution containing a reducing agent (e.g., hydrazine hydrosulfate). The leachant substantially rejects nickel values, thus cobalt is extracted which is substantially free of nickel.

  Type: Grant

  Filed: January 10, 1983

  Date of Patent: August 7, 1984

  Assignee: The Dow Chemical Company

  Inventor: John L. Burba, III

• Method of making crystalline 2-layer lithium aluminates in ion exchange resins

  Patent number: 4461714

  Abstract: The bayerite form of crystalline alumina, Al(OH).sub.3, contained within a macroporous ion exchange resin is converted to the gibbsite form of Al(OH).sub.3 by reaction with hot MgX.sub.2, where X is halide, followed by water-washing the MgX.sub.2 portion from the product, thereby causing the conversion of bayerite to the gibbsite form of crystalline Al(OH).sub.3. The gibbsite form may then be reacted with hot LiX solution, where X is anion, to form crystalline 2-layer LiX.2Al(OH).sub.3.nH.sub.2 O.

  Type: Grant

  Filed: August 30, 1982

  Date of Patent: July 24, 1984

  Assignee: The Dow Chemical Company

  Inventor: John L. Burba, III

• Lithium aluminates for separating hydrocarbons

  Patent number: 4430097

  Abstract: Particles of crystalline LiX.multidot.2Al(OH).sub.3 .multidot.nH.sub.2 O, where X is a monovalent, divalent, or trivalent anion, especially chlorine, are useful in separating hydrocarbons according to boiling point ranges.

  Type: Grant

  Filed: March 22, 1982

  Date of Patent: February 7, 1984

  Assignee: The Dow Chemical Co.

  Inventor: John L. Burba, III

• Crystalline lithium aluminates

  Patent number: 4348296

  Abstract: Porous substrates containing seeds of hydrous crystalline alumina are contacted with an aqueous solution of alkaline aluminate, thereby causing additional crystalline hydrous alumina to grow on the seeds within the pores of the substrate.

  Type: Grant

  Filed: December 18, 1980

  Date of Patent: September 7, 1982

  Assignee: The Dow Chemical Company

  Inventors: William C. Bauman, John M. Lee, John L. Burba, III

• Crystalline lithium aluminates

  Patent number: 4348295

  Abstract: Crystalline hydrous aluminas, Al(OH).sub.3, are reacted with LiX, where X is anion, under appropriate conditions to prepare crystalline compounds conforming substantially to the empirical formulaLiX.2Al(OH).sub.3.nH.sub.2 Owhere X is anion and nH.sub.2 O represents waters of hydration. Depending on the beginning hydrous alumina, some of the crystalline compounds are of a novel 2-layer unit cell structure and some of a 3-layer unit cell structure.

  Type: Grant

  Filed: December 18, 1980

  Date of Patent: September 7, 1982

  Assignee: The Dow Chemical Company

  Inventor: John L. Burba, III

• Lithium aluminates for gas chromatograph columns

  Patent number: 4321065

  Abstract: Particles of crystalline LiX.multidot.2A1(OH).sub.3 .multidot.nH.sub.2 O, where X is a monovalent, divalent, or trivalent anion, especially chlorine, are useful in gas chromatography in separating hydrocarbons according to boiling point ranges.

  Type: Grant

  Filed: December 18, 1980

  Date of Patent: March 23, 1982

  Assignee: The Dow Chemical Company

  Inventor: John L. Burba, III