Patents by Inventor Koga Shigehiro

Koga Shigehiro 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).

  • Soft vinyl chloride resin composition
    Patent number: 4528306
    Abstract: A soft vinyl chloride resin composition having a light weight and a superior abrasion resistance and lusterless surface is provided, which composition is obtained by blending 100 parts by weight of a vinyl chloride copolymer consisting of 99.0 to 99.95% by weight of vinyl chloride and 1.0 to 0.05% by weight of a polyethylene glycol diacrylate or a polyethylene glycol dimethacrylate both having 4 to 50 polymerization units of ethylene glycol, mainly with (a) 5 to 100 parts by weight of a filler having a specific gravity of 0.7 or less and a compressive strength of 70 Kg/cm.sup.2 or higher and (b) 30 to 150 parts by weight of a plasticizer.
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: July 9, 1985
    Assignee: Chisso Corporation
    Inventors: Koga Shigehiro, Kanazawa Yoshihisa, Okamoto Takeshi, Yamanouchi Masafumi, Shudo Kazumichi