Patents by Inventor Toshio Sogabe

Toshio Sogabe 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).

  • Patent number: 6921797
    Abstract: To provide a method of reducing contents of metal components of a fluorine-containing elastomer through preparation thereof and a molded article obtained from the fluorine-containing elastomer having sufficiently reduced contents of metal components. The method of reducing a metal content of the fluorine-containing elastomer through preparation thereof without using a metal oxide, in which among materials excluding a gaseous monomer which are used for polymerization of a fluorine-containing monomer, coagulation and drying, at least one of them contains substantially no metal component, and the fluorine-containing elastomer which has a metal content of not more than 50 ppm and is obtained by that method.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: July 26, 2005
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshiyuki Tanaka, Masanori Kitaichi, Tomizo Sota, Tatsuya Morikawa, Toshio Sogabe, Mitsuru Kishine
  • Publication number: 20040147698
    Abstract: To provide a method of reducing contents of metal components of a fluorine-containing elastomer through preparation thereof and a molded article obtained from the fluorine-containing elastomer having sufficiently reduced contents of metal components. The method of reducing a metal content of the fluorine-containing elastomer through preparation thereof without using a metal oxide, in which among materials excluding a gaseous monomer which are used for polymerization of a fluorine-containing monomer, coagulation and drying, at least one of them contains substantially no metal component, and the fluorine-containing elastomer which has a metal content of not more than 50 ppm and is obtained by that method.
    Type: Application
    Filed: January 20, 2004
    Publication date: July 29, 2004
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshiyuki Tanaka, Masanori Kitaichi, Tomizo Sota, Tatsuya Morikawa, Toshio Sogabe, Mitsuru Kishine
  • Patent number: 6703461
    Abstract: To provide a method of reducing contents of metal components of a fluorine-containing elastomer through preparation thereof and a molded article obtained from the fluorine-containing elastomer having sufficiently reduced contents of metal components. The method of reducing a metal content of the fluorine-containing elastomer through preparation thereof without using a metal oxide, in which among materials excluding a gaseous monomer which are used for polymerization of a fluorine-containing monomer, coagulation and drying, at least one of them contains substantially no metal component, and the fluorine-containing elastomer which has a metal content of not more than 50 ppm and is obtained by that method.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: March 9, 2004
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshiyuki Tanaka, Masanori Kitaichi, Tomizo Sota, Tatsuya Morikawa, Toshio Sogabe, Mitsuru Kishine
  • Patent number: 6642307
    Abstract: In the emulsion obtained by forcedly emulsifying by applying a high shearing force on the water insoluble liquid in the presence of a small amount of emulsifying agent, at least one of fluorine-containing monomers being in the form of gas at ordinary temperature at atmospheric pressure is emulsion-polymerized stably and efficiently. An amount of the emulsifying agent is an amount which does not change the number of water insoluble liquid particles in the emulsion during the polymerization.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: November 4, 2003
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshio Sogabe, Tatsuya Morikawa, Yoshiyuki Tanaka, Masanori Kitaichi, Mitsuru Kishine
  • Patent number: 4513129
    Abstract: A copolymer comprising monomeric units derived from ethylene, tetrafluoroethylene or chlorotrifluoroethylene and a fluorovinyl compound of the formula:CH.sub.2 .dbd.CFRf (I)wherein Rf is a C.sub.2 -C.sub.10 fluoroalkyl group, a molar ratio of ethylene and tetrafluoroethylene or chlorotrifluoroethylene being from 40:60 to 60:40 and the content of the fluorovinyl compound being from 0.1% to 10% by mole having improved thermal resistance and high temperature mechanical properties such as crack resistance.
    Type: Grant
    Filed: April 18, 1984
    Date of Patent: April 23, 1985
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Shinichi Nakagawa, Kiyohiko Ihara, Toshio Sogabe