Patents by Inventor Shigeki Narahashi

Shigeki Narahashi 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 tire for passenger car
    Patent number: 5107915
    Abstract: A pneumatic tire for a passenger car characterized in that a rubber chafer around bead portions is composed of a laminate member consisting of a soft rubber layer which is at least 0.2 mm thick and a hard rubber layer which is thicker than the soft rubber layer, the soft rubber layer being made of a rubber having a JIS hardness Hs of 50 to 65, a complex elastic modulus E* of at least 3.0 MPa and a compression set of up to 25% and disposed outside, and the hard rubber layer being made of a rubber having a JIS hardness Hs of 70 to 85, a complex elastic modulus E* of at least 6.0 MPa and a compression set of up to 32% and disposed inside.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: April 28, 1992
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Iwao Shimomura, Shigeki Narahashi