Patents by Inventor Thomas J. Chapaton

Thomas J. Chapaton 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).

  • Publication number: 20100222441
    Abstract: One embodiment of the invention contemplates a proton exchange membrane for use in a variety of fuel cells. The proton exchange membrane may comprise a solid phase organic based copolymer material in which a first structural unit is derived from a polymerizable organic super acid. The organic super acid may comprise an acid group such as a sulfonic acid group or a carboxylic acid group.
    Type: Application
    Filed: May 14, 2010
    Publication date: September 2, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Tenneille Weston Capehart, Gail Capehart, Gerhard Maier, Claude Spino, Thomas J. Chapaton, Markus Gross, Armand Soldera
  • Patent number: 7718753
    Abstract: One embodiment of the invention contemplates a proton exchange membrane for use in a variety of fuel cells. The proton exchange membrane may comprise a solid phase organic based copolymer material in which a first structural unit is derived from a polymerizable organic super acid. The organic super acid may comprise an acid group such as a sulfonic acid group or a carboxylic acid group.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: May 18, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Tenneille Weston Capehart, Gail Capehart, legal representative, Gerhard Maier, Claude Spino, Thomas J. Chapaton, Markus Gross, Armand Soldera
  • Publication number: 20090043068
    Abstract: One embodiment of the invention contemplates a proton exchange membrane for use in a variety of fuel cells. The proton exchange membrane may comprise a solid phase organic based copolymer material in which a first structural unit is derived from a polymerizable organic super acid. The organic super acid may comprise an acid group such as a sulfonic acid group or a carboxylic acid group.
    Type: Application
    Filed: June 11, 2008
    Publication date: February 12, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Tenneille Weston Capehart, Gail Capehart, Gerhard Maier, Claude Spino, Thomas J. Chapaton, Markus Gross, Armand Soldera
  • Patent number: 7272925
    Abstract: The nitric oxide (NO) and nitrogen dioxide (NO2) content of lean-burn engine exhaust is beneficially prepared for selective catalytic reduction (SCR) of these oxides to nitrogen by two sidestream additions to the exhaust. An ozone-containing air stream is added to the exhaust to affect oxidation of NO to NO2. And a hydrocarbon(s) fuel constituent is added to a second humidified ozone-containing air stream and that mixture subjected to UV radiation. Strongly oxidizing hydroxyl radicals are formed by interaction of ozone, water, and UV radiation for reaction with the hydrocarbon. The resulting partially oxidized hydrocarbons (Pox) are added to the exhaust, providing effective reduction materials for the SCR of NO2 to nitrogen and water.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: September 25, 2007
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Kenneth B. Gross, Steven J. Schmieg, Byong K. Cho, Jerome P. Ortmann, Daniel Dziedzic, Thomas J. Chapaton
  • Patent number: 7163482
    Abstract: Antifoam compositions for functional fluids contain antifoam agents comprising perfluoropolyether compounds (PFPE). An automatic transmission fluid is provided containing the antifoam composition in a lubricating base oil, along with conventional additives such as antiwear agents. Automobile transmissions are provided that contain an automatic transmission fluid containing the new antifoam compositions. In a further embodiment, methods are provided for reducing foam in an engine oil or unwanted noise in an automobile transmission during operation, comprising lubricating the engine or transmission with a lubricating fluid containing the antifoam compositions of the invention.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: January 16, 2007
    Assignee: General Motors Corporation
    Inventors: Reuben Sarkar, Brent D. Calcut, Thomas J. Chapaton, Marie-Christine G. Jones
  • Patent number: 7098173
    Abstract: Antifoam compositions for automatic transmission fluids contain antifoam agents comprising perfluoropolyether compounds (PFPE). An automatic transmission fluid is provided containing the antifoam composition in a lubricating base oil, along with conventional additives such as antiwear agents. Automobile transmissions are provided that contain an automatic transmission fluid containing the new antifoam compositions. In a further embodiment, methods are provided for reducing unwanted noise in an automobile transmission during operation, comprising lubricating the transmission with an ATF containing the antifoam compositions of the invention.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: August 29, 2006
    Assignee: General Motors Corporation
    Inventors: Brent D. Calcut, Thomas J. Chapaton, Reuben Sarkar, Marie-Christine G. Jones
  • Patent number: 7087674
    Abstract: Antifoam compositions for functional fluids contain antifoam agents comprising perfluoropolyether compounds (PFPE). An automatic transmission fluid is provided containing the antifoam composition in a lubricating base oil, along with conventional additives such as antiwear agents. Automobile transmissions are provided that contain an automatic transmission fluid containing the new antifoam compositions. In a further embodiment, methods are provided for reducing foam in an engine oil or unwanted noise in an automobile transmission during operation, comprising lubricating the engine or transmission with a lubricating fluid containing the antifoam compositions of the invention.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: August 8, 2006
    Assignee: General Motors Corporation
    Inventors: Reuben Sarkar, Brent D. Calcut, Thomas J. Chapaton, Marie-Christine G. Jones
  • Patent number: 7056870
    Abstract: A rubber composition contains an antifoam compound that leaches out of the rubber composition when placed in contact with a functional fluid. The antifoam compound is delivered into a functional fluid such as an automatic transmission fluid or an engine oil by contacting the functional fluid with the rubber composition. In addition to the antifoam compound, the rubber composition contains one or more elastomers, which may be selected from a wide variety of natural or synthetic rubbers. In a preferred embodiment, the elastomer comprises a high temperature elastomer such as acrylic elastomer and ethylene acrylic elastomer.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: June 6, 2006
    Assignee: General Motors Corporation
    Inventors: Thomas J. Chapaton, Reuben Sarkar, Marie-Christine G. Jones, Brent D. Calcut
  • Patent number: 6828283
    Abstract: The present invention includes a traction fluid that includes an alkyl bridged dimer of bicycloheptane. Methods of using alkyl bridged dimers of bicycloheptane in traction fluids are also disclosed.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: December 7, 2004
    Assignee: Genberal Motors Corporation
    Inventors: Thomas J. Chapaton, Tenneille W. Capehart, James L. Linden
  • Patent number: 6824701
    Abstract: One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including 10 to 14 wt % of a hydrocarbon-based liquid, 86 to 90 wt % of bimodal magnetizable particles, 0.05 to 0.5 wt % fumed silica, and an additive package including a paraffin oil, a phenol and a sulfide.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: November 30, 2004
    Assignee: General Motors Corporation
    Inventors: John C. Ulicny, Anthony L. Smith, Mark A. Golden, Brian L. McDermott, Thomas J. Chapaton
  • Patent number: 6797680
    Abstract: The present invention includes a traction fluid that includes a di-acid ester bridged dimer. Methods of using di-acid ester bridged dimers in traction fluids are also disclosed.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: September 28, 2004
    Assignee: General Motors Corporation
    Inventors: Thomas J. Chapaton, Tenneille Weston Capehart, James L. Linden, Andrew Mark Mance
  • Publication number: 20040157970
    Abstract: Antifoam compositions for functional fluids contain antifoam agents comprising perfluoropolyether compounds (PFPE). An automatic transmission fluid is provided containing the antifoam composition in a lubricating base oil, along with conventional additives such as antiwear agents. Automobile transmissions are provided that contain an automatic transmission fluid containing the new antifoam compositions. In a further embodiment, methods are provided for reducing foam in an engine oil or unwanted noise in an automobile transmission during operation, comprising lubricating the engine or transmission with a lubricating fluid containing the antifoam compositions of the invention.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 12, 2004
    Inventors: Reuben Sarkar, Brent D. Calcut, Thomas J. Chapaton, Marie-Christine G. Jones
  • Publication number: 20040157751
    Abstract: A rubber composition contains an antifoam compound that leaches out of the rubber composition when placed in contact with a functional fluid. The antifoam compound is delivered into a functional fluid such as an automatic transmission fluid or an engine oil by contacting the functional fluid with the rubber composition. In addition to the antifoam compound, the rubber composition contains one or more elastomers, which may be selected from a wide variety of natural or synthetic rubbers. In a preferred embodiment, the elastomer comprises a high temperature elastomer such as acrylic elastomer and ethylene acrylic elastomer.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 12, 2004
    Inventors: Thomas J. Chapaton, Reuben Sarkar, Marie-Christine G. Jones, Brent D. Calcut
  • Publication number: 20040152931
    Abstract: The present invention includes a traction fluid that includes an alkyl bridged dimer of bicycloheptane. Methods of using alkyl bridged dimers of bicycloheptane in traction fluids are also disclosed.
    Type: Application
    Filed: February 5, 2003
    Publication date: August 5, 2004
    Inventors: Thomas J. Chapaton, Tenneille W. Capehart, James L. Linden
  • Publication number: 20040152607
    Abstract: The present invention includes a traction fluid that includes a di-acid ester bridged dimer. Methods of using di-acid ester bridged dimers in traction fluids are also disclosed.
    Type: Application
    Filed: February 5, 2003
    Publication date: August 5, 2004
    Inventors: Thomas J. Chapaton, Tenneille Weston Capehart, James L. Linden, Andrew Mark Mance
  • Publication number: 20040121921
    Abstract: A functional fluid contains conventional additives in addition to an antifoam composition. The antifoam compositions contain perfluoropolyether compounds (PFPE). An exemplary functional fluid is an engine oil and engines containing such new engine oil as per the invention exhibit reduced foaming and improved performance. A method of treating the engines comprises adding to the lubricating composition in the sump a top treat composition comprising an antifoam composition of the invention.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 24, 2004
    Inventors: Brent D. Calcut, Thomas J. Chapaton, Reuben Sarkar, Marie-Christine G. Jones
  • Publication number: 20040097384
    Abstract: Antifoam compositions for automatic transmission fluids contain antifoam agents comprising perfluoropolyether compounds (PFPE). An automatic transmission fluid is provided containing the antifoam composition in a lubricating base oil, along with conventional additives such as antiwear agents. Automobile transmissions are provided that contain an automatic transmission fluid containing the new antifoam compositions. In a further embodiment, methods are provided for reducing unwanted noise in an automobile transmission during operation, comprising lubricating the transmission with an ATF containing the antifoam compositions of the invention.
    Type: Application
    Filed: November 19, 2002
    Publication date: May 20, 2004
    Inventors: Brent D. Calcut, Thomas J. Chapaton, Reuben Sarkar, Marie-Christine G. Jones
  • Publication number: 20030042461
    Abstract: One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including 10 to 14 wt % of a hydrocarbon-based liquid, 86 to 90 wt % of bimodal magnetizable particles, 0.05 to 0.5 wt % fumed silica, and an additive package including a paraffin oil, a phenol and a sulfide.
    Type: Application
    Filed: September 4, 2001
    Publication date: March 6, 2003
    Inventors: John C. Ulicny, Anthony L. Smith, Mark A. Golden, Brian L. Mc Dermott, Thomas J. Chapaton