Patents by Inventor Kousuke Ito

Kousuke Ito 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).

  • Combination of cylinder liner and piston ring of internal combustion engine
    Patent number: 6553957
    Abstract: A cylinder liner and a piston ring adapted to be combined therewith in an internal combustion engine are provided that have excellent abrasion resistance, where iron oxide film is formed at least on a part of the inner circumferential surface of the cylinder liner, and metallic nitride film is formed at least on a sliding surface of the piston ring sliding along the cylinder liner.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: April 29, 2003
    Assignees: Nippon Piston Ring Co., Ltd., Hino Motors Ltd.
    Inventors: Yoshiki Ishikawa, Hideyo Iwama, Yoshio Naito, Takashi Takakura, Kousuke Ito, Tatsuya Suzuki