Patents by Inventor Isao Usuki

Isao Usuki 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).

  • Clutch device
    Patent number: 6464061
    Abstract: An object of the present invention is to provide a clutch device capable of providing a simple structure, greatly reducing power-application cost and component cost, reducing weight and improving convenience.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: October 15, 2002
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Masahiro Inoue, Isao Usuki, Koji Shima