Patents by Inventor Kojirou Yamaguchi

Kojirou Yamaguchi 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).

  • Pneumatic radial tire
    Patent number: 4387759
    Abstract: A pneumatic radial tire having a sandwiched structure formed by embracing side rubber between rubber filler and rubber chafer in the bead portion is disclosed. The tire has a high stiffness in the bead portion and has very excellent durable life.
    Type: Grant
    Filed: October 5, 1981
    Date of Patent: June 14, 1983
    Assignee: Bridgestone Tire Company Limited
    Inventors: Kazuo Obata, Yutaka Yamaguchi, Kojirou Yamaguchi, Akio Sato