Patents by Inventor Yasuo Dotani

Yasuo Dotani 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: 5755627
    Abstract: A metallic golf club head that has an end portion, on which a neck part is integrally formed, and a hollow portion therein. The golf club head further has a face member, which is formed integrally with the neck part by forging, and a hollow member that is welded to a peripheral edge portion of the face member and, with the face position, composes the hollow portion. The face member is provided with a face portion, whose front surface is a face surface and whose rear surface is formed flat, and a raised portion formed like a ring in such a way as to project from a peripheral edge part of the face portion in a direction opposite to a direction to which the face surface is faced. A rear-end peripheral edge part of the raised portion is butt-welded to a front-end peripheral edge part of the hollow member.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: May 26, 1998
    Assignee: Mitsubishi Materials Corporation
    Inventors: Satoshi Yamazaki, Shigeki Ohno, Yasuo Dotani