Patents by Inventor Tomoyuki Kitsunai

Tomoyuki Kitsunai 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 composition containing an imide polymer and graft copolymer
    Patent number: 4608414
    Abstract: A thermoplastic resin composition comprising:(A) from 10 to 90 parts by weight of an imide-modified polymer having an imido group and obtained by reacting ammonia and/or a primary amine to a copolymer prepared by the polymerization of a monomer mixture comprising from 50 to 70% by weight of an aromatic vinyl monomer and from 30 to 50% by weight of an unsaturated dicarboxylic acid anhydride;(B) from 10 to 90 parts by weight of a graft copolymer prepared by copolymerizing from 30 to 75% by weight of a mixture comprising from 40 to 80% by weight of a rubber-like polymer having a weight average particle size of from 0.3 to 0.6 .mu.m and from 20 to 60% by weight of a rubber-like polymer having a weight average particle size of from 0.1 to 0.2 .mu.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: August 26, 1986
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoyuki Kitsunai, Tetsuji Miura, Norio Yagi
  • Process for producing an iminated copolymer
    Patent number: 4591619
    Abstract: A thermoplastic resin composition is provided which comprises 10 to 90 wt % of an iminated copolymer prepared by reacting ammonia and/or a primary amine with a graft copolymerization product obtained by graft-copolymerizing a rubber-like polymer with a monomer mixture containing an aromatic vinyl monomer and an unsaturated dicarboxylic acid anhydride and 10 to 90 wt % of a graft-copolymer obtained by graft-copolymerizing a rubber-like polymer with a monomer mixture containing an aromatic vinyl monomer and/or a polymer obtained by polymerizing an aromatic vinyl monomer.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: May 27, 1986
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoyuki Kitsunai, Kiyotaka Saito, Shozo Hori
  • Thermoplastic resin composition containing iminated copolymer
    Patent number: 4504625
    Abstract: A thermoplastic resin composition is provided which comprises 10 to 90 wt % of an iminated copolymer prepared by reacting ammonia and/or a primary amine with a graft copolymerization product obtained by graft-copolymerizing a rubber-like polymer with a monomer mixture containing an aromatic vinyl monomer and an unsaturated dicarboxylic acid anhydride and 10 to 90 wt % of a graft-copolymer obtained by graft-copolymerizing a rubber-like polymer with a monomer mixture containing an aromatic vinyl monomer and/or a polymer obtained by polymerizing an aromatic vinyl monomer.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: March 12, 1985
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoyuki Kitsunai, Kiyotaka Saito, Shozo Hori
  • Heat resistant resin composition
    Patent number: 4404322
    Abstract: A heat resistant thermoplastic resin composition is provided which comprises an iminated copolymer prepared by iminating a copolymer obtained by copolymerizing an aromatic vinyl monomer, maleic acid anhydride and a vinyl monomer copolymerizable with the aromatic vinyl monomer and maleic acid anhydride with the use of ammonia and/or a primary amine, and mixed with a graft polymer with or without a styrene base polymer.
    Type: Grant
    Filed: January 20, 1982
    Date of Patent: September 13, 1983
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kiyotaka Saito, Tomoyuki Kitsunai, Shozo Hori