Patents by Inventor Yasumichi Ito

Yasumichi Ito 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).

  • Fluorine-containing elastomeric electric insulating material and insulated electric wire coated therewith
    Patent number: 4770937
    Abstract: A fluorine-containing elastomeric electric insulating material is disclosed. The material is a vulcanized product of a composition comprising 100 parts by weight of a fluorine-containing elastomeric copolymer having a number average molecular weight of from 20,000 to 60,000, containing as major components a unit based on tetrafluoroethylene and a unit based on an .alpha.-olefin having 2 to 4 carbon atoms and exhibiting rubber elasticity at room temperature, 0.1 to 5 parts by weight of an organic peroxide and 0.1 to 20 parts by weight of a polyallyl compound.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: September 13, 1988
    Assignees: Hitachi Cable, Ltd., Asahi Glass Co., Ltd.
    Inventors: Hideki Yagyu, Ikuo Seki, Mituharu Morozumi, Yasumichi Ito, Rikichi Koike
  • Curable composition of elastomeric vinylidene fluoride copolymer
    Patent number: 4758618
    Abstract: A curable composition comprising an elastomeric vinylidene fluoride copolymer, a polyhydroxy compound and a vulcanization accelerator, characterized in that said copolymer contains from 2 to 50 mol % of vinylidene fluoride units and unsaturated bonds introduced by reacting an untreated elastomeric vinylidene fluoride copolymer dispersed in an aqueous medium, with an aqueous alkaline solution containing an onium compound.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: July 19, 1988
  • Fluoroelastomer composition and lining material made thereof
    Patent number: 4530970
    Abstract: A fluoroelastomer composition comprising a fluoroelastomer and a polyvinylidene fluoride, wherein the fluoroelastomer is a peroxide-curable fluorinated copolymer elastomer, the polyvinylidene fluoride is fine powder having an average particle size of at most 20 .mu.m, and the composition contains a peroxide and an allyl compound as essential ingredients.
    Type: Grant
    Filed: March 20, 1984
    Date of Patent: July 23, 1985
    Assignee: Asahi Glass Company Ltd.
    Inventors: Mitsuharu Morozumi, Yasumichi Ito, Takeshi Hiramatsu, Minoru Asai
  • Stabilized ethylene-tetrafluoroethylene copolymer composition
    Patent number: 4110308
    Abstract: Ethylene-tetrafluorethylene copolymer compositions are stabilized against thermal degradation by incorporating therein a small amount of a copper compound.
    Type: Grant
    Filed: August 25, 1976
    Date of Patent: August 29, 1978
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takeshi Abe, Masahiko Ichimura, Makoto Noshiro, Nobuaki Kunii, Yasumichi Ito