Patents by Inventor Katsuki Nagano

Katsuki Nagano 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).

  • Urethane prepolymer
    Patent number: 4038304
    Abstract: A polyurethane prepolymer composition comprising (1) not less than 0.65 by weight of the idealized adduct from trimethylolpropane with 3 moles of 3-isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate and (2) not more than 0.05 by weight of 3-isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate relative to the whole composition is very suitable for an isocyanate component of a two-package urethane coating and gives a coating film having excellent gloss, weathering resistance, adhesivity and impact resistance.
    Type: Grant
    Filed: May 9, 1975
    Date of Patent: July 26, 1977
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Seiji Kazama, Michio Tanaka, Katsuki Nagano