Patents Examined by Robert M. Kinemund
  • Carbon graphite component for an electrochemical cell and method for making the component
    Patent number: 4938942
    Abstract: A method for making a carbon-graphite component, such as a fuel cell substrate, suited for use in an electrochemical cell includes forming a precursor sheet structure comprising a resin, fibers that are graphitizable, and an inorganic compound containing boron and oxygen. Various details of the method are developed that effect the carbon yield of cellulose fibers used for the precursor sheet and the thermal and the electrical conductivity of the component. In one embodiment, the inorganic compound of boron and oxygen is boric acid.
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: July 3, 1990
    Assignee: International Fuel Cells
    Inventors: Michael E. Gorman, Richard D. Breault, John Donahue, Sudhangshu Bose