Patents by Inventor Mitsuru Furudate

Mitsuru Furudate 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).

  • Illumination light transmitting device
    Patent number: 4918577
    Abstract: An illumination light transmitting device comprising a rectangular illumination light transmitting body and a light source disposed outside an illumination range of the body or at an end portion of the body. The body has an illuminating portion formed with an oblique surface at the other end portion of the body on the opposite side of the light source. The oblique surface is formed with plural curved grooves. The light from the light source is transmitted through the body and is reflected on the curved grooves in various directions, thereby ensuring uniform illumination with effective irregular reflection.
    Type: Grant
    Filed: September 15, 1988
    Date of Patent: April 17, 1990
    Assignee: Alps Electric Co., Ltd.
    Inventor: Mitsuru Furudate