Patents by Inventor Yokichi Nishi

Yokichi Nishi 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).

  • Position-sensitive photodetector and light transmissive tablet and light-emitting pen
    Patent number: 4794634
    Abstract: The data input device comprises a tablet portion made of a two-dimensional position-sensitive photodetector and a planar display element laid one on the other, and a light emitting pen forming a light spot on a light-receiving surface of the position-sensitive photodetector. The locus of the movement of the light emitting pen is displayed on the surface of the planar display element at correspond positions in accordance with the output of the two-dimensional position-sensitive photodetector, and the contents of the display provided on the planar displaying element are allowed to be delivered for subsequent processings.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: December 27, 1988
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Shigenori Torihata, Hisaakira Imaizumi, Toru Suzuki, Tomoo Matsuda, Masatake Hirooka, Yokichi Nishi, Mitsuo Hosoi, Naoya Tsurumaki, Yukitaka Takitani