Patents by Inventor Harufumi Yamanaka

Harufumi Yamanaka 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).

  • Golf club treated with plating
    Patent number: 5472202
    Abstract: There is disclosed a golf club with a metal head capable of achieving a longer driving distance. Super hard plating is applied to the metal head of the golf club. With this golf club, a driving distance is increased about 4% to 10%.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: December 5, 1995
    Inventor: Harufumi Yamanaka