Patents by Inventor Masao Hijiri

Masao Hijiri 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).

  • Sports instrument and impact-absorbing element to be attached to sports instrument
    Patent number: 5421574
    Abstract: This invention relates to sports instruments with which the impact or vibration transmitted to the body such as arms and legs of a user when the instrument is used is largely reduced, and to an impact-absorbing element which is used by being attached on sports instruments. The sports instrument according to the present invention comprises as at least a part of the material constituting a sports instrument a vibration-reducing material having a vibration loss coefficient of not less than 0.01 at room temperature. The impact-absorbing element according to the present invention is to be used by being attached to a sports instrument, which comprises a vibration-reducing material having a vibration loss coefficient of not less than 0.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: June 6, 1995
    Assignee: Toray Industries, Inc.
    Inventors: Masahiro Yamagishi, Masao Hijiri, Yasuo Komatsu, Hiroshi Edagawa, Naoki Imaeda
  • Sports instrument and impact-absorbing element to be attached to sports equipment
    Patent number: 5314180
    Abstract: This invention relates to sports rackets with which the impact or vibration transmitted to the body such as the arms, of a user when the sports racket is used is largely reduced. The sports racket according to the present invention comprises as at least a part of the material constituting said sports racket a vibration-reducing material having a vibration loss coefficient of not less than 0.01 at room temperature, comprising epoxy resin, polyamide resin, and a filler.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: May 24, 1994
    Assignee: Toray Industries, Inc.
    Inventors: Masahiro Yamagishi, Masao Hijiri, Yasuo Komatsu, Hiroshi Edagawa, Naoki Imaeda
  • Fibrous heating element
    Patent number: 4983814
    Abstract: A fibrous heating element having an electrical resistance of 1 to 100 .OMEGA./m is prepared by coating a core fiber, preferably a yarn, with one or more electroconductive layers consisting of a polyurethane resin having carbon particles dispersed therein. The fibrous element is pliable and can be knit or woven into a fabric, and is particularly suitable for use in an electric heating blanket or in an industrial heating element.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: January 8, 1991
    Assignee: Toray Industries, Inc.
    Inventors: Katsunori Ohgushi, Masao Hijiri, Zenwemon Kitazawa