Patents by Inventor Yoshio Souda

Yoshio Souda 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 preparing carbon/carbon composite
    Patent number: 5186873
    Abstract: A carbon/carbon composite is prepared by polymerizing a polycyclic aromatic compound in the presence of a coupling agent, then impregnating a bundle of carbon fibers with the resulting polymer, then carbonizing the thus-impregnated carbon fiber bundle under pressure or under pressing, and optionally, further carbonizing the thus-carbonized carbon fiber bundle at atmospheric pressure.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: February 16, 1993
    Assignee: Nippon Oil Company, Limited
    Inventors: Seiichi Uemura, Yoshio Souda, Osamu Kato, Takefumi Kouno, Tsutomu Kihara