Patents by Inventor Shunji Izumi

Shunji Izumi 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 ball
    Patent number: 4611810
    Abstract: A golf ball having compression strength greater than 7000 kg-f and rebound height greater than 90/120, said golf ball comprising a rubber composition filled with 10 to 40 parts by weight of calcium carbonate based on 100 parts by weight of the rubber, the calcium carbonate having a BET specific surface area of 60 to 300 m.sup.2 /g and a particle diameter of 0.035 to 0.010 micrometers.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: September 16, 1986
    Assignees: Toyo Denka Kogyo Co., Ltd., Kamatari Co., Ltd.
    Inventors: Toshihiko Kamata, Shunji Izumi, Kazuo Irimajiri, Setsuji Edagawa
  • Electric shaver
    Patent number: D284224
    Type: Grant
    Filed: June 14, 1984
    Date of Patent: June 10, 1986
    Assignee: Izumi Seimitsu Kogyo Kabushiki Kaisha
    Inventor: Shunji Izumi
  • Electric shaver
    Patent number: D284317
    Type: Grant
    Filed: June 14, 1984
    Date of Patent: June 17, 1986
    Assignee: Izumi Seimitsu Kogyo Kabushiki Kaisha
    Inventor: Shunji Izumi
  • Shaving cutter
    Patent number: D288251
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: February 10, 1987
    Assignee: Izumi Seimitsu Kogyo Kabushiki Kaisha
    Inventor: Shunji Izumi
  • Shaving cutter
    Patent number: D294981
    Type: Grant
    Filed: August 21, 1985
    Date of Patent: March 29, 1988
    Assignee: Izumi Seimitsu Kogyo Kabushiki Kaisha
    Inventor: Shunji Izumi
  • Shaving cutter
    Patent number: D294982
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: March 29, 1988
    Assignee: Izumi Seimitsu Kogyo Kabushiki Kaisha
    Inventor: Shunji Izumi