Patents by Inventor Toshikatsu Kawata

Toshikatsu Kawata 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).

  • Acetal resin composition
    Patent number: 4578422
    Abstract: This invention relates to a glass-reinforced acetal resin composition having excellent heat stability and mechanical strength. The resin composition contains both a polycyanate compound and an amino-substituted triazine and/or a cyanoguanidine compound as coupling agents. The resin composition of the invention is useful, for example, as a material for automotive parts and machine parts because of its higher mechanical strength and heat stability, especially the former, than conventional known glass-reinforced acetal resins.
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: March 25, 1986
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Masanori Sakurai, Junichi Miyawaki, Toshikaju Umemura, Toshikatsu Kawata, Shinji Kiboshi
  • Acetal resin composition
    Patent number: 4506053
    Abstract: An acetal resin composition comprising(A) an acetal resin,(B) at least one member selected from the group consisting of (1) a polyfunctional cyanic acid ester or its prepolymer, (2) a mixture of a polyfunctional cyanic acid ester or its prepolymer with a polyfunctional maleimide or its prepolymer and (3) a pre-copolymer of a polyfunctional cyanic acid ester and a polyfunctional maleimide,(C) an amine-substituted triazine and/or a cyanoguanidine compound, and(D) an inorganic filler other than glass, and/or an organic filler.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: March 19, 1985
    Assignee: Mitsubishi Gas Chemical Co., Inc.
    Inventors: Masanori Sakurai, Junichi Miyawaki, Toshikazu Umemura, Toshikatsu Kawata, Shinzi Kiboshi, Akiyoshi Shibata