Patents by Inventor Kouich Yamauch

Kouich Yamauch 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).

  • Ceramics bearing
    Patent number: 4770549
    Abstract: A ceramics bearing comprising an inner ring, and outer ring, and a plurality of rolling elements rollably arranged between the inner and outer rings which is characterized in that the fracture toughness factors K.sub.IC (MPam1/2) of the inner and the outer rings are identical and that of the rolling elements is greater than that of the inner and the outer rings by about 0.5-2.0.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: September 13, 1988
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Kazuo Rokkaku, Hiroaki Takebayashi, Kouich Yamauch