Patents by Inventor Hiroshi Osuka

Hiroshi Osuka 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).

  • Method of producing polymer compositions based on chlorinated polyethylene
    Patent number: 3970718
    Abstract: In a method for producing a polymer composition by contactingA. a polymer component selected from the group consisting of chlorinated polyethylene and a mixture consisting of a major amount of chlorinated polyethylene and a minor amount of copolymer selected from an ethylene-propylene copolymer rubber an, ethylene-propylene-nonconjugated diene terpolymer rubber and an ethylene-vinyl acetate copolymer rubber, withB. a monomer mixture comprisingB.sub.1. at least one of styrene, alpha-methyl styrene, tertiary butyl styrene and chlorostyrene, andB.sub.2. at least one of acrylonitrile and methacrylonitrileUnder polymerization conditions to form an interpolymer of the components (A) and (B), the improvement which comprises suspending polymer component (A) and monomer component (B) in the form of fine particles in an aqueous medium.
    Type: Grant
    Filed: January 28, 1975
    Date of Patent: July 20, 1976
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Akira Takahashi, Hiroo Kojima, Masao Ogawa, Hiroshi Osuka, Shoichi Kobayashi