Patents by Inventor Yasuo Fukitani

Yasuo Fukitani 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).

  • Switch circuit arrangement
    Patent number: 4425563
    Abstract: A switch circuit arrangement, wherein a plurality of switch means each comprising paired display lamp and self-restore type switch contact are provided, and a control circuit is also provided in association with said switch means. By actuating any one of the switches, a display lamp paired therewith is lit, and at the same time, a control signal is derived from a detector circuit including I.sup.2 L element. The control signal thus derived is passed to a controlled device, whereby the display lamp is lit and maintained in the lit state.
    Type: Grant
    Filed: September 15, 1981
    Date of Patent: January 10, 1984
    Assignee: Toko, Inc.
    Inventors: Koichi Nakayama, Yasuo Fukitani