Patents by Inventor Katsumi Fukagawa

Katsumi Fukagawa 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).

  • Self-bonding enameled wire and hermetic compressor motor using the same
    Patent number: 4542064
    Abstract: The self-bonding enameled wire has an electric insulation layer coated thereon and a bonding layer coated over the insulation layer. The bonding layer is prepared with a mixture including: (a) 100 parts by weight of a phenoxy resin and/or an epoxy resin, both the resins containing not larger than 5 ppm of sodium chloride and having a limiting viscosity of not less than 0.440 as measured in tetrahydrofuran solvent at 25.degree. C.; and (b) 20 to 100 weight parts of a n-butylated melamine resin. In place of this n-butylated melamine resin, there is, according to another aspect of the present invention, used 20 to 50 parts by weight of a mixture of a stabilized polyisocyanate and one of a n-butylated melamine resin and a benzoguanamine resin is used. These self-bonding enameled wire are excellent in refrigerant resistance and may be suitably used for windings of a stator coil in hermetic compressor motors.
    Type: Grant
    Filed: February 23, 1984
    Date of Patent: September 17, 1985
    Assignees: Fujikura Ltd., Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Sueji Chabata, Keiji Nakano, Kichizo Ito, Katsuhiko Ueda, Hirokazu Iizuka, Hisao Miyako, Katsumi Fukagawa
  • Core for a stator
    Patent number: D443585
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: June 12, 2001
    Assignee: Toshiba Carrier Corporation
    Inventors: Yoshiharu Shida, Toshihiko Futami, Katsumi Fukagawa, Yoshiaki Inaba, Kazumoto Imazawa, Kiyotaka Kawamura
  • Stator of an electric motor
    Patent number: D445762
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: July 31, 2001
    Assignee: Toshiba Carrier Corporation
    Inventors: Yoshiharu Shida, Toshihiko Futami, Katsumi Fukagawa, Yoshiaki Inaba, Kazumoto Imazawa, Kiyotaka Kawamura