Patents by Inventor Yasutoshi Nishikubo

Yasutoshi Nishikubo 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).

  • Reticule device for a fire sighting scope
    Patent number: 5065520
    Abstract: The present invention discloses a reticule device for a fire sighting scope. According to the reticule device of the present invention, it is possible to lighten brightly the entire surface of a scale facing an eyepiece by illuminating light thereto. A light source and a reflection frame are mounted at each prescribed position and further a conventional crossed scale is incorporated into the device as it stands. Furthermore, since a glass plate is not employed in the scale, dust etc. which might adhere on the scale can easily be cleaned or swept off.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: November 19, 1991
    Assignee: Kabushiki Kaisha Light Kohki Seisakusho
    Inventors: Fumio Shimizu, Yasutoshi Nishikubo, Tadaharu Naito