Patents by Inventor Shigeyoshi Akiyama

Shigeyoshi Akiyama 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).

  • Draining device for muffler of small planing boat
    Patent number: 4779704
    Abstract: A draining device for a muffler of a small planing boat in which engine cooling water is injected into the muffler. A draining hole is opened in the muffler, and to aforesaid draining hole is connected one end of a bypass hose with the other end opened to outside waters at a hull rear section.
    Type: Grant
    Filed: December 2, 1986
    Date of Patent: October 25, 1988
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventor: Shigeyoshi Akiyama