Patents by Inventor John C. Doyle

John C. Doyle 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).

  • Patent number: 7955758
    Abstract: A technique for fabricating an MEA. The technique includes providing a polymer electrolyte proton conducting membrane, and then spraying a catalyst ink directly on the membrane to form a catalyst layer. In one embodiment, the catalyst ink includes the proper ionomer to carbon ratio, such as 0.8/1, for the desired fuel cell performance. In another embodiment, the catalyst ink includes too little ionomer for the proper ionomer to carbon ratio for the desired fuel cell performance. An ionomer layer is sprayed on the membrane before the catalyst layer to provide the proper final ionomer to carbon ratio.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: June 7, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Susan G. Yan, John C. Doyle
  • Patent number: 7451105
    Abstract: Certain embodiments include a method and apparatus for trading and clearing futures contracts using a clearing computer system. The apparatus includes providing a clearing computer system with an input device for receiving user input information including a base tick value and a trade price. The apparatus also includes a database for storing the user input information. The apparatus further includes a processor with programmable circuitry for calculating a settlement amount based on the user input information. Certain embodiments of the apparatus include a trigger for computer-assisted transfer of funds based on the settlement amount and an output for outputting at least one of the user input information and the settlement amount.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: November 11, 2008
    Assignee: Four Four Corporation
    Inventor: John C. Doyle
  • Patent number: 7291419
    Abstract: A technique for fabricating an MEA for a fuel cell that is prepared as a catalyst-coated diffusion media (CCDM). The MEA includes a diffusion media layer having a microporous layer. A catalyst layer is deposited on the microporous layer so that it covers its entire surface. An ionomer layer is sprayed on the catalyst layer. A perfluorinated membrane is sandwiched between one CCDM at the anode side of the MEA and another CCDM at the cathode side of the MEA where the ionomer spray layers face the membrane.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: November 6, 2007
    Assignee: General Motors Corporation
    Inventors: Susan G. Yan, Bhaskar Sompalli, John C. Doyle