Patents by Inventor Yotaka Katayama

Yotaka Katayama 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 wood clubhead
    Patent number: 5288079
    Abstract: A golf wood clubhead has a body having face and sole portions which define a leading edge therebetween. The width from the leading edge of the head body to the rear end of the sole portion is nearly equal to or less than a half of the width from the leading edge of the head body to the rear end thereof. The head body may have a rounded lower back portion of a certain radius of curvature within a region from the rear end of the sole portion to the rear end of the head body. The sole portion may have a rounded surface of the same radius of curvature as that of the rounded lower back portion.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: February 22, 1994
    Assignee: Maruman Golf Kabushiki Kaisha
    Inventor: Yotaka Katayama