Patents by Inventor Mituto Yoshihiro

Mituto Yoshihiro 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).

  • Polyethylene terephthalate resin composition
    Patent number: 4983660
    Abstract: A highly crystalline polyethylene terephthalate resin composition comprising (A) 100 parts by weight of a polyethylene terephthalate copolymer comprising ethylene terephthalate units as the main recurring units, which is formed by copolymerizing a glycol component containing 1 to 20% by weight of a polyalkylene glycol having an average molecular weight of 500 to 20,000 and 1.2 to 15% by weight of diethylene glycol with a carboxylic acid component composed mainly of terephthalic acid, (B) 5 to 200 parts by weight of a fibrous reinforcer, (C) 0.5 to 130 parts by weight of a nucleating agent, and (D) 0.1 to 60 parts by weight of a crystallization-promoting agent. The resin composition optionally contains 2 to 100 parts by weight of an inorganic compound, 2 to 100 parts by weight of an impact strength improver, 2 to 40 parts by weight of a flame retardant, or 1 to 20 parts by weight of a flame retardant assistant.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: January 8, 1991
    Assignee: Mitsubishi Rayon Company Ltd.
    Inventors: Tomohiko Yoshida, Ryoji Handa, Noriyuki Tajiri, Hitochi Iwasaki, Mituto Yoshihiro