Patents by Inventor Kazumasa Tsukagawa

Kazumasa Tsukagawa 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).

  • Publication number: 20040014532
    Abstract: A golf putter includes a club head with an elongated main body, and a resilient sheath enclosing the main body. The sheath has a front covering portion which covers a front side wall of the main body and which has an upright ball contacting surface adapted to be in contact with a golf ball. The ball contacting surface is formed with at least one groove that extends along a longitudinal direction of the main body. A club shaft has a lower end extending through the sheath, and is mounted on the main body of the club head.
    Type: Application
    Filed: September 12, 2002
    Publication date: January 22, 2004
    Inventors: Cheng-Fu Lee, Tomohisa Miyama, Kazumasa Tsukagawa