Patents by Inventor Yukio Kuwayama

Yukio Kuwayama 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).

  • Multi-layer cylindrical bearing
    Patent number: 4767677
    Abstract: A multi-layer cylindrical bearing comprises an outer, backing layer (1a) of stainless steel, an intermediate layer (1b) of porous copper alloy formed by sintering copper alloy, and an inner, bearing layer (1c) of synthetic resin formed by impregnating and curing the resin over said intermediate layer.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: August 30, 1988
    Assignee: NDC Co., Ltd.
    Inventor: Yukio Kuwayama