Patents by Inventor Keirou Shinkawa

Keirou Shinkawa 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).

  • Publication number: 20010027557
    Abstract: For providing a device for serving search/report to viewers responding to an inquiry from the viewers, about information relating to EPGs of the BS digital broadcasting and contents of the data broadcasting services, all channels of the EPGs information of the BS digital broadcasting and the content information of the data broadcasting are received, so as to establish a data base thereof, and at the same time a key-word search data base is also established, thereby supplying a EPG service and a search service, etc., responding to a request for information supply from the viewer.
    Type: Application
    Filed: January 19, 2001
    Publication date: October 4, 2001
    Inventors: Keirou Shinkawa, Teruhiro Takezawa, Shuichi Tago
  • Patent number: 5939826
    Abstract: A plasma display panel for plasma display system provides excellent optical characteristics, including a color purity, contrast, and luminance, of a plasma display system. Barrier ribs forming a cell has wavelength-selective reflective filters for reflecting only a light of wavelength needed for display and absorbing the other lights coated thereon. The wavelength-selective reflective filters have phosphors coated thereon. A color filter is inserted between a first front panel and second front glass panel for feeding out the light in a sandwich state.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: August 17, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Michitaka Ohsawa, Hiroshi Ohtaka, Keirou Shinkawa, Ken Hashimoto, Nobuyuki Ushifusa, Seiichi Tsuchida, Tatsuro Kawamura, Teruo Takai