Patents by Inventor Etsuro Oota

Etsuro Oota 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 carbon fiber composite reinforced carbonaceous material
    Patent number: 5096519
    Abstract: A process for preparation of a carbon fiber composite reinforced carbonaceous material characterized in that using carbon fibers or the raw material fibers of the carbon fibers as the base material, the surfaces of said base material fibers even to the surface of the single fiber are uniformly and completely coated with dormant mesophase pitch and/or isotropic pitch, and after said base material has been molded, the resulting product is subjected to carbonization treatment or graphitization treatment.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: March 17, 1992
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Takamasa Kawakubo, Etsuro Oota