Patents by Inventor Seiichi Yanagioka

Seiichi Yanagioka 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).

  • Nickel-plated golf club shaft made of fiber-reinforced plastics
    Patent number: 4188032
    Abstract: A golf club shaft is provided which includes an elongated body having one end adapted to the grip and the opposite end attached to a golf club head, the elongated body being composed of fiber-reinforced plastic material having on substantially its entire outer surface a metallic plating selected from the group consisting of nickel and nickel based alloys.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: February 12, 1980
    Inventor: Seiichi Yanagioka
  • Baseball bat made of light alloy
    Patent number: 4113248
    Abstract: A baseball bat made of a light alloy having on its surface a plating of heat hardened nickel-phosphorus or nickel-boron alloy.
    Type: Grant
    Filed: May 7, 1976
    Date of Patent: September 12, 1978
    Assignee: Aikoh Co., Ltd.
    Inventor: Seiichi Yanagioka
  • Baseball bat made of fiber-reinforced plastics
    Patent number: 4092025
    Abstract: A baseball bat is provided which comprises an elongated body composed of fiber-reinforced plastic material having on the surface thereof a metallic plating of nickel or nickel base alloy.
    Type: Grant
    Filed: May 19, 1976
    Date of Patent: May 30, 1978
    Assignee: Aikoh Co., Ltd.
    Inventor: Seiichi Yanagioka