Patents by Inventor Shiso Kariyama

Shiso Kariyama 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).

  • Gas seal means for rotary piston engines
    Patent number: 4225295
    Abstract: Rotary piston engine has a rotor which is applied with coatings of a fluoride resin at each side surface in the vicinity of side seals so as to fill clearance between the rotor side surface and the adjacent inner surface of the side housing whereby an improved gas-tightness is obtained.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: September 30, 1980
    Assignee: Toyo Kogyo Co., Ltd.
    Inventors: Kazuma Shimizu, Shiso Kariyama, Yoshimitsu Takeda, Masato Yoshimura