Patents by Inventor Kunitoshi Kimura

Kunitoshi Kimura 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).

  • FRP pipe with threaded ends
    Patent number: 4893658
    Abstract: An FRP pipe having threaded ends at both ends, such as casing, tubing, and coupling, is disclosed, which is characterized in that metal plating is formed on the surface of at least one of the threaded ends.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: January 16, 1990
    Assignees: Sumitomo Metal Industries, Ltd., Nitto Electric Industrial Company, Ltd.
    Inventors: Kunitoshi Kimura, Tetsuzo Arai, Hiroshi Matsuoka, Toshiharu Nakagawa