Patents by Inventor Koujiro Matsuo

Koujiro Matsuo 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).

  • Sliding resin composition
    Patent number: 5034447
    Abstract: A sliding resin composition comprising an aromatic polycarbonate resin composition (A) and zinc oxide whiskers (B) in an amount of from 1 to 40% by weight based on the total weight of the sliding resin composition. The sliding resin composition is suitably used in fields where a sliding property is required, such as a lens frame (lens tube) for cameras, gears and cams for OA machines and apparatus, etc.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: July 23, 1991
    Assignees: Mitsubishi Gas Chemical Co., Inc., Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshiaki Izumida, Koujiro Matsuo, Jun Yagi, Sangoro Ichii, Naoto Obayashi