Patents by Inventor Michio Dohi

Michio Dohi 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: 4029625
    Abstract: Chloroprene or a mixture of chloroprene and a comonomer is polymerized by emulsion polymerization in the presence of an alkali metal or ammonium salt of an aliphatic substituted benzoic acid or a non-ionic polyoxyethylene ether or ester surfactant. The resulting chloroprene polymer is admixed with a solvent, a metal oxide and a thermosettable resin, e.g., an alkylphenol-formaldehyde resin to yield a non-phasing adhesive composition.
    Type: Grant
    Filed: August 27, 1975
    Date of Patent: June 14, 1977
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yasuaki Denda, Takashi Kadowaki, Michio Dohi
  • Patent number: 3988506
    Abstract: A process for producing a chloroprene elastomer, which comprises copolymerizing in the presence of a radical catalyst 80 to 95 parts by weight of 2-chlorobutadiene-1,3 containing less than 0.95% by weight of 1-chlorobutadiene-1,3 with 5 to 20 parts by weight of 2,3-dichlorobutadiene-1,3 at a polymerization temperature of not higher than 20.degree. C in the presence of a mercaptan compound and a process for producing a vulcanized chloroprene rubber.
    Type: Grant
    Filed: May 2, 1975
    Date of Patent: October 26, 1976
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Michio Dohi, Takuji Sumida, Katsuichi Yokobori
  • Patent number: 3941738
    Abstract: Chloroprene or a mixture of chloroprene and a comonomer is polymerized by emulsion polymerization in the presence of an alkali metal or ammonium salt of an aliphatic substituted benzoic acid or a non-ionic polyoxyethylene ether or ester surfactant. The resulting chloroprene polymer is admixed with a solvent, a metal oxide and a thermosettable resin, e.g., an alkylphenol-formaldehyde resin to yield a non-phasing adhesive composition.
    Type: Grant
    Filed: November 1, 1973
    Date of Patent: March 2, 1976
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yasuaki Denda, Takashi Kadowaki, Michio Dohi