Patents by Inventor Tuneo Hironaka

Tuneo Hironaka 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).

  • Chlorosulphonated ethylene-?-olefin copolymer and method for producing the same
    Patent number: 7273908
    Abstract: A chlorosulphonated ethylene-?-olefin copolymer having a chlorine content of 0.5-20% by weight and a glass transition temperature in differential scanning calorimetry (DSC) of ?50° C. or lower and being crystalline. The chlorosulphonated ethylene-?-olefin copolymer is obtained by chlorinating a crystalline ethylene-?-olefin copolymer having a density of 890 kg/m3 or lower, obtained by copolymerizing ?-olefin comprising a hydrocarbon having 4 or more carbon atoms, with ethylene, and then chlorosulphonating the chlorinated copolymer.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: September 25, 2007
    Assignee: Tosoh Corporation
    Inventors: Nobuyuki Ito, Seiichi Shimomura, Tuneo Hironaka, Hideyoshi Nakamura
  • Chlorosulphonated ethylene-alpha-olefin copolymer and method for producing the same
    Publication number: 20050288449
    Abstract: A chlorosulphonated ethylene-?-olefin copolymer having a chlorine content of 0.5-20% by weight and a glass transition temperature in differential scanning calorimetry (DSC) of ?50° C. or lower and being crystalline. The chlorosulphonated ethylene-?-olefin copolymer is obtained by chlorinating a crystalline ethylene-?-olefin copolymer having a density of 890 kg/m3 or lower, obtained by copolymerizing ?-olefin comprising a hydrocarbon having 4 or more carbon atoms, with ethylene, and then chlorosulphonating the chlorinated copolymer.
    Type: Application
    Filed: June 21, 2005
    Publication date: December 29, 2005
    Inventors: Nobuyuki Ito, Seiichi Shimomura, Tuneo Hironaka, Hideyoshi Nakamura