Patents by Inventor Yasuhira Awata

Yasuhira Awata 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).

  • Process for preparation of porous carbon plates
    Patent number: 4619796
    Abstract: Porous carbon plates are made by forming a sheet from a mixture comprising 65-90 weight parts of a carbon fiber-forming organic fiber and 10-35 weight parts of a pulp according to a paper-making method; impregnating the sheet with a solution of an organic polymeric substance to prepare an impregnated sheet; subjecting the impregnated sheet to an oxidizing treatment; and then carbonizing the infusibilized sheet at a temperature of at least 800.degree. C. in an inert gas atmosphere.
    Type: Grant
    Filed: June 21, 1984
    Date of Patent: October 28, 1986
    Assignee: Oji Paper Company, Ltd.
    Inventors: Yasuhira Awata, Osamu Iwaki