Patents by Inventor John D. Wind

John D. Wind has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Crosslinked Membrane And Polymer For Making Same And Method Of Using Membrane
    Publication number: 20130220119
    Abstract: A composition of and a method of making high performance crosslinked membranes are described. The membranes have a high resistance to plasticization by use of crosslinking. The preferred polymer material for the membrane is a polyimide polymer comprising covalently bonded ester crosslinks. The resultant membrane exhibits a high permeability of CO2 in combination with a high CO2/CH4 selectivity. Another embodiment provides a method of making the membrane from a monesterified polymer followed by final crosslinking after the membrane is formed.
    Type: Application
    Filed: March 11, 2013
    Publication date: August 29, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: William J. Koros, David Wallace, John D. Wind, Stephen J. Miller, Claudia Staudt-Bickel
  • Crosslinked polyimide membrane, method for making the same using organic titanate catalysts to facilitate crosslinking and method of using the membrane for fluid separation
    Patent number: 8337586
    Abstract: A method of making a crosslinked polyimide membrane is described. A monoesterified membrane is formed from a monoesterified polyimide polymer. The monoesterified membrane is subjected to transesterification conditions to form a crosslinked membrane. The monoesterified membrane is incorporated with an organic titanate catalyst before or after formation of the monoesterified membrane. A crosslinked polyimide membrane made using the aforementioned method and a method of using the membrane to separate fluids in a fluid mixture, such as methane and carbon dioxide, are also disclosed.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: December 25, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: John D. Wind, Stephen J. Miller, Oluwasijibomi O. Okeowo
  • CROSSLINKED POLYIMIDE MEMBRANE, METHOD FOR MAKING THE SAME USING ORGANIC TITANATE CATALYSTS TO FACILITATE CROSSLINKING AND METHOD OF USING THE MEMBRANE FOR FLUID SEPARATION
    Publication number: 20120241996
    Abstract: A method of making a crosslinked polyimide membrane is described. A monoesterified membrane is formed from a monoesterified polyimide polymer. The monoesterified membrane is subjected to transesterification conditions to form a crosslinked membrane. The monoesterified membrane is incorporated with an organic titanate catalyst before or after formation of the monoesterified membrane. A crosslinked polyimide membrane made using the aforementioned method and a method of using the membrane to separate fluids in a fluid mixture, such as methane and carbon dioxide, are also disclosed.
    Type: Application
    Filed: June 6, 2012
    Publication date: September 27, 2012
    Applicant: Chevron U.S.A. Inc.
    Inventors: John D. Wind, Stephen J. Miller, Oluwasijibomi O. Okeowo
  • Crosslinked polyimide membrane, method for making the same using organic titanate catalysts to facilitate crosslinking and method of using the membrane for fluid separation
    Patent number: 8221531
    Abstract: A method of making a crosslinked polyimide membrane is described. A monoesterified membrane is formed from a monoesterified polyimide polymer. The monoesterified membrane is subjected to transesterification conditions to form a crosslinked membrane. The monoesterified membrane is incorporated with an organic titanate catalyst before or after formation of the monoesterified membrane. A crosslinked polyimide membrane made using the aforementioned method and a method of using the membrane to separate fluids in a fluid mixture also are described.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: July 17, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: John D. Wind, Stephen J. Miller, Oluwasijibomi O. Okeowo
  • CROSSLINKED MEMBRANE AND POLYMER FOR MAKING SAME AND METHOD OF USING MEMBRANE
    Publication number: 20120111191
    Abstract: A composition of and a method of making high performance crosslinked membranes are described. The membranes have a high resistance to plasticization by use of crosslinking. The preferred polymer material for the membrane is a polyimide polymer comprising covalently bonded ester crosslinks. The resultant membrane exhibits a high permeability of CO2 in combination with a high CO2/CH4selectivity. Another embodiment provides a method of making the membrane from a monesterified polymer followed by final crosslinking after the membrane is formed.
    Type: Application
    Filed: December 17, 2010
    Publication date: May 10, 2012
    Inventors: William J. Koros, David Wallace, John D. Wind, Stephen J. Miller, Claudia Staudt-Bickel
  • CROSSLINKED MEMBRANE AND POLYMER FOR MAKING SAME AND METHOD OF USING MEMBRANE
    Publication number: 20090249950
    Abstract: A composition of and a method of making high performances crosslinked membranes are described. The membranes have a high resistance to plasticization by use of crosslinking. The preferred polymer material for the membrane is a polyimide polymer comprising covalently bonded ester crosslinks. The resultant membrane exhibits a high permeability of CO2 in combination with a high CO2/CH4 selectivity. Another embodiment provides a method of making the membrane from a monesterified polymer followed by final crosslinking after the membrane is formed.
    Type: Application
    Filed: July 24, 2007
    Publication date: October 8, 2009
    Applicant: CHEVRON U.S.A. INC.
    Inventors: William J. Koros, David Wallace, John D. Wind, Claudia Staudt-Bickel, Stephen J. Miller
  • CROSSLINKED POLYIMIDE MEMBRANE, METHOD FOR MAKING THE SAME USING ORGANIC TITANATE CATALYSTS TO FACILITATE CROSSLINKING AND METHOD OF USING THE MEMBRANE FOR FLUID SEPARATION
    Publication number: 20090165645
    Abstract: A method of making a crosslinked polyimide membrane is described. A monoesterified membrane is formed from a monoesterified polyimide polymer. The monoesterified membrane is subjected to transesterification conditions to form a crosslinked membrane. The monoesterified membrane is incorporated with an organic titanate catalyst before or after formation of the monoesterified membrane. A crosslinked polyimide membrane made using the aforementioned method and a method of using the membrane to separate fluids in a fluid mixture, such as methane and carbon dioxide, are also disclosed.
    Type: Application
    Filed: December 31, 2007
    Publication date: July 2, 2009
    Inventors: John D. Wind, Stephen J. Miller, Oluwasijibomi O. Okeowo
  • Crosslinked and crosslinkable hollow fiber membrane and method of making same
    Patent number: 6932859
    Abstract: A composition of and a method of making high performance hollow fiber membranes is described. The membranes have a high resistance to plasticization by use of a predetermined amount of crosslinking. The preferred polymer material for the membrane is a polyimide polymer comprising covalently bonded ester crosslinks. The resultant hollow fiber membrane exhibits a high permeability of CO2 in combination with a high CO2/CH4 selectivity. Another embodiment provides a method of making the hollow fiber membrane from a monesterified polymer followed by final crosslinking after hollow fiber formation.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: August 23, 2005
    Assignees: Chevron USA Inc, University of Texas System
    Inventors: William J. Koros, David Wallace, John D. Wind, Stephen J. Miller, Claudia Staudt-Bickel
  • Crosslinked and crosslinkable hollow fiber mixed matrix membrane and method of making same
    Patent number: 6755900
    Abstract: A composition of and a method of making high performance mixed matrix hollow fiber membranes is described. The membranes have a high resistance to plasticization by use of a predetermined amount of crosslinking. The preferred polymer material for the membrane is a polyimide polymer continuous phase comprising ester crosslinks and a molecular sieve material dispersed within the polymer continuous phase. The resultant mixed matrix hollow fiber membrane exhibits a high permeance of CO2 in combination with a high CO2/CH4 selectivity. Another embodiment provides a method of making the mixed matrix hollow fiber membrane from a monesterified polymer followed by final crosslinking after hollow fiber formation.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: June 29, 2004
    Assignees: Chevron U.S.A. Inc., University of Texas System
    Inventors: William J. Koros, David Wallace, John D. Wind, Stephen J. Miller, Claudia Staudt-Bickel, De Q. Vu
  • Crosslinked and crosslinkable hollow fiber membrane and method of making same
    Publication number: 20030221559
    Abstract: A composition of and a method of making high performance hollow fiber membranes is described. The membranes have a high resistance to plasticization by use of a predetermined amount of crosslinking. The preferred polymer material for the membrane is a polyimide polymer comprising covalently bonded ester crosslinks. The resultant hollow fiber membrane exhibits a high permeability of CO2 in combination with a high CO2/CH4 selectivity. Another embodiment provides a method of making the hollow fiber membrane from a monesterified polymer followed by final crosslinking after hollow fiber formation.
    Type: Application
    Filed: December 18, 2002
    Publication date: December 4, 2003
    Inventors: William J. Koros, David Wallace, John D. Wind, Stephen J. Miller, Claudia Staudt-Bickel
  • Crosslinked and crosslinkable hollow fiber mixed matrix membrane and method of making same
    Publication number: 20030140789
    Abstract: A composition of and a method of making high performance mixed matrix hollow fiber membranes is described. The membranes have a high resistance to plasticization by use of a predetermined amount of crosslinking. The preferred polymer material for the membrane is a polyimide polymer continuous phase comprising ester crosslinks and a molecular sieve material dispersed within the polymer continuous phase. The resultant mixed matrix hollow fiber membrane exhibits a high permeance of CO2 in combination with a high CO2/CH4 selectivity. Another embodiment provides a method of making the mixed matrix hollow fiber membrane from a monesterified polymer followed by final crosslinking after hollow fiber formation.
    Type: Application
    Filed: December 18, 2002
    Publication date: July 31, 2003
    Inventors: William J. Koros, David Wallace, John D. Wind, Stephen J. Miller, Claudia Staudt-Bickel, De Q. Vu