Patents by Inventor Haruo Igawa

Haruo Igawa 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).

  • Thermoplastic resin compositions
    Patent number: 4476266
    Abstract: (1) A graft copolymer latex obtained by the copolymerization of a rubbery diene polymer latex with an aromatic vinyl monomer and an acrylic monomer is mixed with (2) a copolymer latex having a glass transition point of -40.degree. to 10.degree. C. and a volume-average particle size of at least 0.5.mu. obtained by the copolymerization of an olefin with a vinyl ester of a fatty acid while they are maintained in the form of latex to precipitate a solid resin, whereby a thermoplastic resin composition is obtained. The total solid resin contains at least 11 wt. % of the rubbery diene polymer and at least 1 wt. % of the copolymer of olefin/vinyl ester of fatty acid.
    Type: Grant
    Filed: November 10, 1982
    Date of Patent: October 9, 1984
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tetsuro Maeda, Susumu Ohoka, Masafumi Shingai, Haruo Igawa