Patents by Inventor Baku Katagiri

Baku Katagiri 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).

  • Rear projection display screen
    Publication number: 20070103603
    Abstract: A rear projection display screen with a simplified structure that displays a high-quality image without the occurrence of stray light and moiré fringing is provided. The rear projection display screen includes a scattering film 2 that uniformly scatters light incident from an angle in a specific angular range (from ?? to ??) within a specific angular region (from ? to ?), and has a viewing angle of 40° or more in either the vertical direction or the horizontal direction or both the vertical direction and the horizontal direction. The rear projection display screen of the present invention may include a protective plate 3 disposed on the scattering film, if necessary, the protective plate 3 protecting the scattering film.
    Type: Application
    Filed: October 10, 2003
    Publication date: May 10, 2007
    Applicant: TOHOKU TECHNO-BRAINS CORPORATION
    Inventors: Baku Katagiri, Tetsuya Miyashita, Takahiro Ishinabe, Tatsuo Uchida