Patents by Inventor Seth D. Valentine

Seth D. Valentine 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).

  • Fuel cell separator plate
    Patent number: 8802326
    Abstract: A fuel cell stack and a bipolar plate assembly is provided that may include straight-through tunnels to transport fluids from one side of a header seal to an opposite side of a header seal, fluidly connecting fuel cell stack reactant headers and bipolar plate reactant flow channels.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: August 12, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven J. Spencer, Seth D. Valentine, Courtney E. Reich, Daniel P Miller
  • Manufacture of membrane electrode assembly with edge protection for PEM fuel cells
    Patent number: 8470497
    Abstract: Methods for attaching a subgasket to an ionomer membrane, wherein the methods provide for the precise location of the subgasket relative to the other component edges of the fuel cell, such as the catalyst layers, so as provide the functionality required to extend the ionomer membrane life and prevent damage to the ionomer membrane during the assembly process.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: June 25, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Ronald L. James, Seth D. Valentine, James Liestra
  • FUEL CELL SEPARATOR PLATE
    Publication number: 20120129073
    Abstract: A fuel cell stack and a bipolar plate assembly is provided that may include straight-through tunnels to transport fluids from one side of a header seal to an opposite side of a header seal, fluidly connecting fuel cell stack reactant headers and bipolar plate reactant flow channels.
    Type: Application
    Filed: November 23, 2010
    Publication date: May 24, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Steven J. Spencer, Seth D. Valentine, Courtney E. Reich, Daniel P. Miller
  • PEM fuel cell assembly formed of modular sub-assemblies
    Patent number: 7595126
    Abstract: A method for forming a fuel cell assembly including the pre-final-assembly step of forming a plurality of fuel cell sub-assembly modules, each module including a predetermined number of individual fuel cell repeating units, for example, ten. Each module may be leak and performance tested and certified prior to inclusion in the final fuel cell stack, thus limiting potential rework to only an individual module and only before assembly of the final stack. Preferably, each module is assembled on an assembly fixture having alignment rods, using a combination of resilient gasketing and RTV to seal between the elements. The assembled module is then placed under compression while the silicone is cured.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: September 29, 2009
    Assignees: Delphi Technologies, Inc., General Motors Corporation
    Inventors: Allan R. Wells, Gary J. De Angelis, Seth D. Valentine
  • Manufacture or membrane electrode assembly with edge protection for PEM fuel cells
    Publication number: 20080105354
    Abstract: Methods for attaching a subgasket to an ionomer membrane, wherein the methods provide for the precise location of the subgasket relative to the other component edges of the fuel cell, such as the catalyst layers, so as provide the functionality required to extend the ionomer membrane life and prevent damage to the ionomer membrane during the assembly process.
    Type: Application
    Filed: November 8, 2006
    Publication date: May 8, 2008
    Applicant: GM Global Technology Operations, Inc.
    Inventors: Ronald L. James, Seth D. Valentine, James Leistra