Patents by Inventor Toshiyuki Nagahama

Toshiyuki Nagahama 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).

  • Supervisory control panel board
    Patent number: 4658525
    Abstract: A supervisory control panel board includes a supervisory control panel having illumination apertures therein at a supervisory display surface zone of the panel. The panel board also includes a dressing frame, which frame is removably mounted on the display surface of the supervisory control panel. When mounted on the supervisory control panel, the dressing frame supports a film member in a state wherein this film member is kept in close contact with the supervisory display surface. That film member is inscribed with a graphic diagram of the process steps desired to be supervised.
    Type: Grant
    Filed: December 2, 1983
    Date of Patent: April 21, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Toshiyuki Nagahama, Hisashi Suzuki, Akira Yamamoto