Patents by Inventor David Dobulis

David Dobulis 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).

  • Controlled electrode overlap architecture for improved MEA durability
    Patent number: 7955750
    Abstract: A membrane electrode assembly includes a membrane layer, a cathode or anode catalyst layer adjacent to a surface of the membrane layer, an anode or cathode catalyst layer adjacent to an other surface of the membrane layer, an adhesive layer adjacent to the other surface of the membrane layer, wherein the adhesive layer abuts a surface of the anode or cathode catalyst layer, and a subgasket layer having an edge portion, wherein the subgasket layer is adjacent to a surface of the adhesive layer, wherein the cathode catalyst layer and anode catalyst layer extend along a length of the membrane layer relative to the edge portion of the subgasket layer, wherein the cathode or anode catalyst layer extends a greater length along the length of the membrane layer than the anode or cathode catalyst layer relative to the edge portion of the subgasket layer.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: June 7, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: James Leistra, Ronald L. James, David Dobulis
  • Controlled electrode overlap architecture for improved MEA durability
    Publication number: 20070196718
    Abstract: A membrane electrode assembly includes a membrane layer, a cathode or anode catalyst layer adjacent to a surface of the membrane layer, an anode or cathode catalyst layer adjacent to an other surface of the membrane layer, an adhesive layer adjacent to the other surface of the membrane layer, wherein the adhesive layer abuts a surface of the anode or cathode catalyst layer, and a subgasket layer having an edge portion, wherein the subgasket layer is adjacent to a surface of the adhesive layer, wherein the cathode catalyst layer and anode catalyst layer extend along a length of the membrane layer relative to the edge portion of the subgasket layer, wherein the cathode or anode catalyst layer extends a greater length along the length of the membrane layer than the anode or cathode catalyst layer relative to the edge portion of the subgasket layer.
    Type: Application
    Filed: February 21, 2006
    Publication date: August 23, 2007
    Inventors: James Leistra, Ronald James, David Dobulis