Patents by Inventor Susumu Isohata

Susumu Isohata 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).

  • Magnesia cement composition, process of its manufacture, and composite comprising same
    Patent number: 4003752
    Abstract: A magnesia cement composition comprising active magnesia, magnesium sulfate, and pulp or a mixture of pulp and fibrous glass. When hardened, this composition yields a crack-free low-shrinkage material. Valuable composite boards are obtained by lamination from the hardened composition and core materials such as cellular concrete, plywood, plastic foam, gypsum plaster board, and cemented excelsior board.
    Type: Grant
    Filed: May 20, 1975
    Date of Patent: January 18, 1977
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Susumu Isohata, Kazutaka Watabe, Morio Shimoshimizu, Toshiyuki Iwaisako
  • Inorganic hardening composition
    Patent number: 3951673
    Abstract: An inorganic hardening composition containing water glass and at least one of petalite and spodumene fired at a temperature of at least 1,000.degree.C has a high hardness, water resistance, incombustibility and fire resistance.
    Type: Grant
    Filed: November 12, 1974
    Date of Patent: April 20, 1976
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Susumu Isohata, Kyoichi Sasaki, Yoshihiro Minamitani
  • Microwave cooking apparatus
    Patent number: 3941967
    Abstract: A microwave oven comprises a heating element which produces heat by absorption of microwave radiation and on which is placed a material to be cooked with the interposition of a material support therebetween. If required, the heating element is disposed on a heat insulating body. A shield cover is arranged on the support for enclosing the material to be cooked placed on the support and for limiting the amount of microwave radiation which is allowed to be incident on the material from the exterior thereof. The material to be cooked is internally heated upon irradiation with the radiation and at the same time the heating element produces heat which is applied to the surface of the material through the material support. When the material support comprises a metal plate, an electric insulating body which prevents a spark discharge is arranged between the shield cover and the metal plate.
    Type: Grant
    Filed: September 28, 1973
    Date of Patent: March 2, 1976
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Momoki Sumi, Goro Kanda, Norio Iriguchi, Susumu Isohata, Kyoichi Sasaki