Patents by Inventor Nobuhito Takasugi

Nobuhito Takasugi 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 tread
    Patent number: 4649975
    Abstract: A pneumatic tire having a tread portion with a tread pattern which is constituted by main grooves, auxiliary grooves, lug grooves and sipes, wherein the mean depth Gc of the auxiliary grooves, the mean depth Gs of the lug grooves and the mean depth Gk of the sipes are determined in relation to the mean depth G of the main grooves so as to meet the following conditions:Gk/G=0.65 to 0.85Gc/G=0.7 to 0.8Gs/G=0.8 to 1.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: March 17, 1987
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Tomohiko Kogure, Tadayoshi Hiraga, Riichiro Mama, Nobuhito Takasugi