Patents by Inventor Hayashi Keijiro

Hayashi Keijiro 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).

  • Patent number: 4889338
    Abstract: Racket frames for playing tennis, badmitton or squash wherein powdered solid perfume, especially microencapsulated powdered solid perfume is arranged between the different parts of a racket frame, for example, in the attachment composed of an elastic part for fixing perfume, a stationary part and a contacting part, inserted in a notched part in the middle of the yoke of the racket frame and the powdered solid perfume emits fragrance from the racket frame with different kinds of perfumes, due to external factors for example, rubbing or pressurizing or the like when players use the racket.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: December 26, 1989
    Assignee: Mizuno Corporation
    Inventor: Hayashi Keijiro