Patents by Inventor Hitoshi Sadachika

Hitoshi Sadachika 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).

  • Target device
    Patent number: 6683693
    Abstract: The present invention relates to a target device for use in a non-prism light wave range finder. In particular, the invention is concerned with a target device comprising a base portion and at least one reflective surface formed on the base portion, the reflective surface being constituted by a colored retroreflective sheet.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: January 27, 2004
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Hisao O Tsuka, Masahiro Ohishi, Hitoshi Sadachika