Patents by Inventor Seigo Kinoshita

Seigo Kinoshita 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).

  • Maleimide copolymer and process for preparing same
    Patent number: 5274059
    Abstract: A maleimide random copolymer contains an N-substituted compound structural unit, an unsaturated peroxycarbonate structural unit and optionally a vinyl monomer structural unit. In place of the unsaturated peroxycarbonate structural unit, an unsaturated peroxyester unit may be contained. A process for preparing a maleimide graft copolymer comprises polymerizing a mixture of an N-substituted maleimide compound and a vinyl monomer in the presence of a random vinyl copolymer containing peroxy groups with active oxygen content.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: December 28, 1993
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Kenji Kato, Yasumi Koinuma, Kazunori Doiuchi, Seigo Kinoshita, Yukinori Haruta
  • N-substituted maleimide polymer composition
    Patent number: 5179162
    Abstract: As N-substituted maleimide polymer composition contains 20 to 90 parts by weight of an N-substituted maleimide polymer and 80 to 10 parts by weight of a thermoplastic resin selected from a polycarbonate polymer, a polysulfone polymer, a polyphenylene ether polymer, a polyarylene sulfide polymer, and a modified polymer of the polymer or polymers, a polyoxymethylene polymer, a polyester polymer, a polyamide polymer and mixtures thereof.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: January 12, 1993
    Assignee: Nippon Oil & Fats Co., Ltd.
    Inventors: Kenji Kato, Yasumi Koinuma, Kazunori Doiuchi, Seigo Kinoshita, Yukinori Haruta
  • Maleimide copolymer and process for preparing same
    Patent number: 5140083
    Abstract: A maleimide random copolymer contains an N-substituted compound structural unit, an unsaturated peroxycarbonate structural unit and optionally a vinyl monomer structural unit. In place of the unsaturated peroxycarbonate structural unit, an unsaturated peroxyester unit may be contained. A process for preparing a maleimide graft copolymer comprises polymerizing a mixture of an N-substituted maleimide compound and a vinyl monomer in the presence of a random vinyl copolymer containing peroxy groups with active oxygen content.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: August 18, 1992
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Kenji Kato, Yasumi Koinuma, Kazunori Doiuchi, Seigo Kinoshita, Yukinori Haruta