Patents by Inventor Seiji Takubo

Seiji Takubo 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).

  • Mold release composition
    Patent number: 5079299
    Abstract: This invention provides a mold release composition copmrising (1) a compound or a polymer having at least one of perfluoroalkyl groups having 4 to 20 carbon atoms and perfluoroalkenyl groups having 4 to 20 carbon atoms, and (2) a ladder polymer of organosilsesquioxane.
    Type: Grant
    Filed: July 16, 1989
    Date of Patent: January 7, 1992
    Assignee: Daikin Industries, Ltd.
    Inventors: Iwao Hisamoto, Masayoshi Shinjyo, Seiji Takubo, Yasuko Katakura
  • Water- and oil-repellent composition
    Patent number: 4962156
    Abstract: Disclosed is A water- and oil-repellent composition comprising (A) at least one species selected from the group consisting of a homopolymer and a copolymer of perfluoroalkyl group-containing acrylate, a homopolymer and a copolymer of methacrylate, a copolymer of the same and a monomer copolymerizable therewith and a perfluoroalkyl group-containing urethane compound, and (B) a ladder polymer of organosilsesquioxane.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: October 9, 1990
    Assignee: Daikin Industries, Ltd.
    Inventors: Masayoshi Shinjo, Sumiko Okamoto, Yasuko Katakura, Seiji Takubo