Patents by Inventor Yuhachi Takahashi

Yuhachi Takahashi 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).

  • Composition comprising a thermoplastic resin and mineral filler particles coated with an ethylenically unsaturated organic acid, the ethylenic double bonds of which remain substantially unreacted; product resulting from causing said to react
    Patent number: 4242251
    Abstract: A composition comprising a thermoplastic resin and an activated mineral filler, said mineral filler consisting of particles of at least one aluminosilicate-type mineral containing alakali metal ions as cations in its crystal structure, the surfaces of said particles being covered monomolecularly with at least one ethylenically unsaturated organic acid, having 10 or less carbon atoms, which is bonded to the metal ions on the surfaces of said particles and retains ethylenic double bonds unreacted. On being mixed under application of heat to cause reaction, this composition gives a molded article excellent in compatibility and physical properties such as stiffness, toughness, ductility, fatigue properties, water resistance, transparency, etc.
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: December 30, 1980
    Assignees: Asahi Kasei Kogyo Kabushiki Kaisha, Shiraishi Central Laboratories Co., Ltd.
    Inventors: Itsuho Aishima, Junji Seki, Koichi Matsumoto, Yonemasa Furusawa, Ryogo Tsukisaka, Yuhachi Takahashi