Patents by Inventor Kazumitsu Ohnuki

Kazumitsu Ohnuki 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).

  • Compact optical switch
    Patent number: 5212744
    Abstract: A compact control-type optical switch includes a control knob provided on the obverse surface of a lid; a switching member slidable right and left in a housing; a substantially trapezoidal prism disposed on the undersurface of the switching member; and a plurality of optical receptacles provided on the bottom of the housing. The control knob is actuated, and thereby the prism slides on the optical receptacles to change an optical path.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: May 18, 1993
    Assignee: Nihon Kaiheiki Kogyo Kabushiki Kaisha
    Inventor: Kazumitsu Ohnuki