Patents by Inventor Yuu Hirano

Yuu Hirano 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: 5029045
    Abstract: A surface lighting apparatus for backlighting a liquid crystal display panel(LCD) (4) has a light guide (11) for evenly illuminating back face of the LCD, the light guide comprising: an incidence plane wherefrom light beams from light source come in; a front face disposed vertical to the incidence plane wherefrom the light beams are out; and a curved back face whereon light reflecting layer is formed for reflecting the light beams to the front face.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: July 2, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yukiharu Sanai, Yuu Hirano