Patents by Inventor Yoshio Yamashita

Yoshio Yamashita 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).

  • Aqueous coating composition
    Patent number: 3993612
    Abstract: In an aqueous coating composition comprising a vinyl polymer emulsion prepared by subjecting a vinyl monomer to emulsion polymerization in an aqueous medium in the presence of maleinized polybutadiene used as a dispersion stabilizer, an improvement which is characterized in that at least one copolymer is further incorporated, said copolymer being composed of (A) at least one monomer prepared by reacting one glycidyl ester of acrylic acid and methacrylic acid with at least one fatty acid of drying oil fatty acid and semi-drying oil fatty acid, (B) at least one .alpha.,.beta.-ethylenically unsaturated acid and (C) at least one unsaturated monomer containing substantially no carboxyl group and having a Q value of at least 0.1 as determined by Q-e theory.
    Type: Grant
    Filed: March 19, 1975
    Date of Patent: November 23, 1976
    Assignee: Kansai Paint Company, Ltd.
    Inventors: Tetsuo Aihara, Tadashi Watanabe, Yasuharu Nakayama, Yoshio Yamashita, Isao Toyomoto