Patents by Inventor Hidefumi Takanashi

Hidefumi Takanashi 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: 6348520
    Abstract: The present invention provide a method for color matching of a thermosetting powder coating composition, the method comprising the steps of: (1) dryblending two or more kinds of starting colored thermosetting powder coating compositions of different colors having an average particle size of 20 &mgr;m or less to achieve color matching, and (2) granulating the dryblend to a particle size in the range suitable for powder coating, by heating and agitating the dryblend, or by adding a specific solid binder, or by grinding and classifying a sheet or grains formed by compressing the dryblend. According to the present invention, color matching can be easily made, and a color-matched powder coating composition is obtained which is excellent in application characteristics, finished appearance and film properties.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: February 19, 2002
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Kazuhiko Ohnishi, Yugen Kawamoto, Hidefumi Takanashi
  • Patent number: 6331581
    Abstract: This invention provides a method for color matching of a thermosetting powder coating composition, the method comprising the steps of: dryblending two or more kinds of starting colored thermosetting powder coating compositions of different colors having an average particle size of 10 &mgr;m or less to achieve color matching, and granulating the dryblend to a particle size in the range which is suitable for coating, by adding at least one binder selected from the group consisting of an aqueous solution of polyethylene glycol and an aqueous dispersion of paraffin wax; and a production process therefor. According to the present invention, color matching can be easily made, and a film of the obtained color-matched powder coating composition is excellent in finished appearance and outstanding in properties.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: December 18, 2001
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Kazuhiko Ohnishi, Hidefumi Takanashi, Yugen Kawamoto