Patents by Inventor Chiaki Tsukamoto

Chiaki Tsukamoto 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).

  • Corrosion resistant tire rim
    Patent number: 4421821
    Abstract: A corrosion-resistant tire rim coated with a plastic paint which is obtained by the addition of flake filler to unsaturated polyester resin or epoxy resin in order to improve the chemical-resistance.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: December 20, 1983
    Assignee: The Toyo Rubber Industry Company, Limited
    Inventors: Hideyuki Matsubara, Ikutaka Kosugi, Chiaki Tsukamoto
  • Block copolymer of polyamide and polyether, and its preparation and use
    Patent number: 3946089
    Abstract: A block copolymer of 99.8 to 90 % by weight of a polyamide segment and 0.2 to 10 % by weight of a polyether segment dispersed in an island state of not more than about 10 .mu. in particle size, the polyamide segment comprising at least one diamine component containing 100 to 50 mol % (preferably 100 to 70 mol %) of m-xylylenediamine or its mixture with p-xylylenediamine and at least one dicarboxylic acid component containing 100 to 50 mol % (preferably 100 to 70 mol %) of at least one aliphatic dicarboxylic acid having 6 to 12 carbon atoms, the polyether segment comprising at least one polyether having a molecular weight of 2,000 to 20,000 and an amino group or a carboxyl group at at least one terminal position thereof and the block copolymer having a scattering index of not less than 1.
    Type: Grant
    Filed: February 6, 1974
    Date of Patent: March 23, 1976
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kaoru Furukawa, Chiaki Tsukamoto, Hiroshi Nagai, Koichi Matsunami, Hikoichi Nagano