Patents by Inventor Ryuzo Komatsu

Ryuzo Komatsu 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).

  • Rubber reinforcing steel cord and heavy duty pneumatic radial tire using the steel cord
    Patent number: 6405774
    Abstract: A rubber reinforcing steel cord of a bundle-twisted+layer-twisted structure obtained by arranging 9 steel filaments around 3 steel filaments each being two-dimensionally wave-like shaped in the lengthwise direction, intertwining all of these steel filaments in one operation to form a bundle-twisted cord, and further arranging 14 steel filaments around the bundle-twisted cord followed by intertwining. Also, a heavy duty pneumatic radial tire using the rubber reinforcing steel cord as the cord of the carcass layer thereof.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: June 18, 2002
    Assignee: The Yokohama Co., Ltd.
    Inventor: Ryuzo Komatsu