Patents by Inventor Kouichi Hirooka

Kouichi Hirooka 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).

  • Patch for preventing carburization, nitriding or oxidation, and method of preventing carburization, nitriding or oxidation
    Patent number: 5330813
    Abstract: A patch for preventing carburization, nitriding or oxidation comprises:a film comprising a heat-fusible or heat-meltable particulate material having an anti-carburizing, anti-nitriding or anti-oxidizing effect and a heat-decomposable resin as a binder; anda heat-resistant silicone pressure sensitive adhesive, which is decomposed at a carburizing, nitriding or oxidizing temperature, provided on one side of the film.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: July 19, 1994
    Assignee: Kabushiki Kaisha Nard Kenkyusho
    Inventors: Kouichi Hirooka, Kouichi Ito, Susumu Tanabe
  • Pattern material used for investment casting
    Patent number: 4758613
    Abstract: A material for making a pattern used in the investment casting, the material including wax and starch between 2% by weight and 70% by weight.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: July 19, 1988
    Assignees: Komatsu Haumetto Kabushiki Kaisha, Kabushiki Kaisha Nard Kenkyusho
    Inventors: Shigeru Kawano, Kouichi Hirooka, Susumu Tanabe, Motoko Mishima