Patents by Inventor Etsuko Kumata

Etsuko Kumata 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).

  • Member for retaining rolling bodies
    Patent number: 5180231
    Abstract: A rolling body retaining member comprising, based on the whole weight thereof, 15 to 50 wt. % of glass fiber or like reinforcing fiber, 5 to 15 wt. % of carbon powder, and the balance polyether ether ketone resin.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: January 19, 1993
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Hiroshi Ueno, Shoji Hatabu, Etsuko Kumata, Takehiro Adachi