Patents by Inventor Katsumi SHIBUYA

Katsumi SHIBUYA 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).

  • Friction material
    Patent number: 10190649
    Abstract: This friction material contains a fiber base material, a friction modifier and a binder. The content of copper in the friction material is not more than 0.5 mass % in terms of elemental copper, and the content of the binder is at least 10 mass %. Furthermore, the friction material contains calcium hydroxide and zinc, and has a pH of at least 11.7.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: January 29, 2019
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Motoyuki Miyaji, Katsumi Shibuya, Takayuki Watanabe
  • FRICTION MATERIAL
    Publication number: 20160273604
    Abstract: This friction material contains a fiber base material, a friction modifier and a binder. The content of copper in the friction material is not more than 0.5 mass % in terms of elemental copper, and the content of the binder is at least 10 mass %. Furthermore, the friction material contains calcium hydroxide and zinc, and has a pH of at least 11.7.
    Type: Application
    Filed: November 11, 2014
    Publication date: September 22, 2016
    Inventors: Motoyuki MIYAJI, Katsumi SHIBUYA, Takayuki WATANABE