Patents by Inventor Takashige Maekawa

Takashige Maekawa 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).

  • Water and oil repellant
    Patent number: 5057577
    Abstract: A water and oil repellant comprising, as effective component, polymer particles each containing at least two polymers, wherein at least one of said at least two polymers is a polymer containing a polyfluoroalkyl group.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: October 15, 1991
    Assignee: Asahi Glass Company Ltd.
    Inventors: Masashi Matsuo, Takashige Maekawa, Katsuji Ito
  • Water and oil repellant having desoiling properties
    Patent number: 4859754
    Abstract: A water and oil repellant having desoiling properties composed of a polyfluorinated group-containing copolymer obtained by copolymerizing the following monomers a and b as essential constituting components:a: a polyfluorinated group-containing monomerb: an amphipathic monomer having a hydrophilic moiety and a lipophilic moiety.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: August 22, 1989
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Takashige Maekawa, Kazuya Oharu, Tomoko Sakaguchi
  • Surface modifier
    Patent number: 4761459
    Abstract: A surface modifier comprising a block copolymer obtained by polymerizing a polyfluoroalkyl group-containing compound in the presence of a chain transfer agent composed of a polysiloxane having a mercapto group at its terminal, said block copolymer containing polymer segments of said polysiloxane and polymer segments of said compound, as essential components.
    Type: Grant
    Filed: June 3, 1987
    Date of Patent: August 2, 1988
    Assignee: Asahi Glass Company Ltd.
    Inventors: Masashi Matsuo, Nobuyuki Yamagishi, Takashige Maekawa