Patents by Inventor Tsunesuke Doi

Tsunesuke Doi 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).

  • Aliphatic triisocyanate, a method for preparing it and the preparation of polyurethane resins therewith
    Patent number: 4314048
    Abstract: 4-Isocyanate methyl-1,8-octamethylene diisocyanate of the formula (I), ##STR1## and a method of preparing 4-isocyanate methyl-1,8-octamethylene diisocyanate of the formula (I) which comprises reacting 4-aminomethyl-1,8-diaminooctane of the formula (II), ##STR2## or its salt with phosgene at a temperature of about 70.degree. C. to about 220.degree. C. in an inert reaction medium.
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: February 2, 1982
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Tsunesuke Doi, Akira Ide, Yasushi Kishimoto
  • Aqueous aluminum paste composition
    Patent number: 4138270
    Abstract: A novel aqueous aluminum paste composition comprising specific amounts of a fatty acid, a fatty acid alkanolamide and a nonionic surface active agent other than the fatty acid alkanolamide as well as aluminum flakes, and water. The aqueous aluminum paste composition is well dispersible and stably storable in water and has good bubble retention characteristics when used as a foaming agent in the manufacture of light-weight foamed concrete.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: February 6, 1979
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Shizuo Ishijima, Tsunesuke Doi
  • Anti-corrosive agent for metals
    Patent number: 4073618
    Abstract: A method of inhibiting corrosion of metals comprising applying to a metal surface in an effective concentration a saturated aliphatic triamine of 9 carbon atoms having at each terminal position a primary amino group and being branched in the 4-position of the main chain Such specific triamines include 1,3,6-triaminomethylhexane and 1,2,3-triaminoethylpropane. Addition products and condensation products derived from these organic triamines are also effective. The present anti-corrosive agents show a remarkable rust preventive effect to metals even when used in a small amount and are non-toxic.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: February 14, 1978
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Tsunesuke Doi, Hiroshi Komoto, Masazumi Chono, Akira Inoue, Kazuaki Saito, Isao Shinozuka
  • Anti-corrosive agent for metals
    Patent number: 4028055
    Abstract: A method of inhibiting corrosion of metals comprising applying to a metal surface in an effective concentration a saturated aliphatic triamine of 9 carbon atoms having at each terminal position a primary amino group and being branched in the 4-position of the main chain. Such specific triamines include 1,3,6-triaminomethylhexane and 1,2,3-triaminoethylpropane. Addition products and condensation products derived from these organic triamines are also effective. The present anti-corrosive agents show a remarkable rust preventive effect to metals even when used in a small amount and are non toxic.
    Type: Grant
    Filed: March 17, 1976
    Date of Patent: June 7, 1977
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Tsunesuke Doi, Hiroshi Komoto, Masazumi Chono, Akira Inoue, Kazuaki Saito, Isao Shinozuka