Patents by Inventor Hideaki Yokka

Hideaki Yokka 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).

  • Symbol illumination apparatus and video display apparatus
    Patent number: 7513429
    Abstract: The present invention provides a symbol illumination apparatus configured to have a symbol such as characters printed on a front surface of a transparent member, and to allow light from a plurality of light sources to pass through an interior of the transparent member from one side of the transparent member, to illuminate the symbol. A lens sheet and a diffused sheet are inserted between the transparent member and the plurality of light sources in the symbol illumination apparatus. This configuration prevents a plurality of light rays from being seen on the bottom of the transparent member.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: April 7, 2009
    Assignee: Sony Corporation
    Inventors: Hitoshi Takahashi, Hiroyoshi Maeda, Hideaki Yokka, Eiji Amaya
  • Symbol illumination apparatus and video display apparatus
    Publication number: 20060101684
    Abstract: The present invention provides a symbol illumination apparatus configured to have a symbol such as characters printed on a front surface of a transparent member, and to allow light from a plurality of light sources to pass through an interior of the transparent member from one side of the transparent member, to illuminate the symbol. A lens sheet and a diffusion sheet are inserted between the transparent member and the plurality of light sources in the symbol illumination apparatus. This configuration prevents a plurality of light rays from being seen on the bottom of the transparent member.
    Type: Application
    Filed: July 11, 2005
    Publication date: May 18, 2006
    Inventors: Hitoshi Takahashi, Hiroyoshi Maeda, Hideaki Yokka, Eiji Amaya