Patents by Inventor Jiro Nishigaki

Jiro Nishigaki 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).

  • Video camera having DC power source light
    Patent number: 5130741
    Abstract: A DC power source light which is mountable to and dismountable from a camera body of a video camera is supplied with power from a battery provided in said camera body so that said DC power source light is made compact and light in weight. Further, either said camera body or said DC power source light has a unit for preventing excess discharge of said battery and a unit for preventing excess current when the switch is turned on, thereby to protect said battery.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: July 14, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Jiro Nishigaki, Takeshi Kawarai, Seiko Nakasuna, Yuichi Kosukegawa, Kazuyoshi Yamada, Yuuhei Abe