Patents by Inventor Sho Kadoi

Sho Kadoi 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).

  • Polyphenylene sulfide composition and shaped articles made therefrom
    Patent number: 5654358
    Abstract: Disclosed are a polyphenylene sulfide composition having excellent impact characteristics, melt flow characteristics and flexibility which comprises, as indispensable components, (A) a polyphenylene sulfide, (B) an epoxy group-containing olefinic polymer, and (C) at least one elastomer selected from ethylene/propylene copolymers, ethylene/butene copolymers, ethylene/propylene/diene copolymers, hydrogenated styrene/butadiene/styrene block copolymers, copolymers of ethylene with a monomer selected from acrylic acid, methacrylic acid and alkyl esters and metal salts thereof, and polyamide elastomers; and a shaped article made from the polyphenylene sulfide composition.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 5, 1997
    Assignee: Toray Industries, Inc.
    Inventors: Sho Kadoi, Norio Shimasaki, Kazuhiko Kobayashi, Katuya Ohno
  • Polyphenylene sulfide composition and shaped articles made therefrom
    Patent number: 5625002
    Abstract: Disclosed are a polyphenylene sulfide composition having excellent impact characteristics, melt flow characteristics and flexibility which comprises, as indispensable components, (A) a polyphenylene sulfide, (B) an epoxy group-containing olefinic polymer, and (C) at least one elastomer selected from ethylene/propylene copolymers, ethylene/butene copolymers, ethylene/propylene/diene copolymers, hydrogenated styrene/butadiene/styrene block copolymers, copolymers of ethylene with a monomer selected from acrylic acid, methacrylic acid and alkyl esters and metal salts thereof, and polyamide elastomers; and a shaped article made from the polyphenylene sulfide composition.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: April 29, 1997
    Assignee: Toray Industries, Inc.
    Inventors: Sho Kadoi, Norio Shimasaki, Kazuhiko Kobayashi, Katuya Ohno
  • Polyphenylene sulfide resin composition
    Patent number: 5488084
    Abstract: Disclosed is a polyphenylene sulfide resin composition having a superior heat resistance and impact resistance obtained by melt-kneading a modified polyphenylene sulfide resin obtained by reacting a polyphenylene sulfide resin with a carboxylic acid anhydride, with at least one thermoplastic resin selected from a polyamide resin, a polyester resin, a polycarbonate resin, a polysulfone resin, and a polyamide-imide resin.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: January 30, 1996
    Assignee: Toray Industries, Inc.
    Inventors: Sho Kadoi, Hidemi Yabe, Kazuhiko Kobayashi
  • Thermoplastic aromatic polyamideimide copolymer from polyamide diamine
    Patent number: 4831104
    Abstract: The thermoplastic aromatic polyamideimide compolymers comprising the structural units (1), (2) and (3) represented by formulae, ##STR1## respectively, (2) and (3) being at ratio of 1 mole to 1 mole of (1), (3) being at a ratio of 0.95-0.05 mole to 0.05-0.95 mole of (2), (1) and (2) or (3) being alternatively interconnected and Ar and Ar' being composed of 5 to 70 mole % of ##STR2## and 95 to 30 mole % of ##STR3## provide the moldings being superior in heat stability and fluidity at the temperatures of 300.degree. to 400.degree. C. and injection moldable and having desired characteristics.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: May 16, 1989
    Assignee: Toray Industries, Inc.
    Inventors: Toshihiko Aya, Sho Kadoi
  • Method of preparing polyimide prepolymer from ethylenically unsaturated dicarboxylic acid compound
    Patent number: 4539392
    Abstract: Polyimide prepolymers having excellent heat resistance can be prepared in one stage by the reaction of polyamines and aromatic double bond-containing dicarboxylic acids or derivatives thereof in the presence of oxide compounds of phosphorus without isolating any intermediate in the course of said reaction.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: September 3, 1985
    Assignee: Toray Industries, Inc.
    Inventors: Sho Kadoi, Toshihiko Aya
  • Thermoplastic polyamide imide copolymers and method of preparation
    Patent number: 4299945
    Abstract: Thermoplastic polyamide imide copolymers are provided which are excellent in both heat stability and melt viscosity characteristics at a temperature of from about 300.degree. C. to about 400.degree. C., and method of preparation.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: November 10, 1981
    Assignee: Toray Industries, Inc.
    Inventors: Toshihiko Aya, Takashi Sasagawa, Sho Kadoi