Patents by Inventor Yoshio Ohfuji

Yoshio Ohfuji 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 shaped resinous articles
    Patent number: 4592887
    Abstract: Liquid curable resins, such as unsaturated polyester resins, unsaturated epoxy resins, polymethyl methacrylates, are cured in a mold, the casting surface of which, is made of a vinyl alcohol-olefin copolymer to produce a shaped resinous article with an improved and even surface gloss.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: June 3, 1986
    Assignee: Kuraray Co., Ltd.
    Inventors: Satoshi Bando, Hirokuni Tanii, Yoshio Ohfuji
  • Flexible building sheet materials
    Patent number: 4148781
    Abstract: A flexible building sheet product is prepared by dry molding a slurry comprising predominantly at least one binder component selected from the group consisting of thermoplastic resin emulsions and aqueous solutions of water-soluble polymers, said solutions containing cross-linking agents for said water-soluble polymers, and a matrix component comprising a calcium sulfate dihydrate powder.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: April 10, 1979
    Assignee: Kuraray Co., Ltd.
    Inventors: Hiroshi Narukawa, Yasuhira Takeuchi, Koichi Saito, Yoshio Ohfuji
  • Dispersion stabilizer
    Patent number: 4122132
    Abstract: A comb-like copolymer comprising an alkenyl aromatic polymer by way of trunk and a saturated polyester by way of branch is incorporated in an unsaturated polyester resin to which an alkenyl aromatic polymer is added for reducing the cure shrinkage of the resin so as to impart dispersion stability to said alkenyl aromatic polymer.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: October 24, 1978
    Assignee: Kuraray Co., Ltd.
    Inventors: Yoshifumi Murata, Yoshio Ohfuji