Patents by Inventor Toshihiro Yamaguchi

Toshihiro Yamaguchi 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).

  • Fluorescent display device
    Patent number: 4486749
    Abstract: A fluorescent display device having a plurality of anodes arranged in the form of a matrix having rows and columns. Each anode arranged on the same row is connected together at intervals of two anodes and control electrodes are disposed opposite to each two anodes respectively on a column-by-column basis.
    Type: Grant
    Filed: June 3, 1982
    Date of Patent: December 4, 1984
    Assignee: Futaba Denshi Kogyo Kabushiki Kaisha
    Inventors: Takao Kishino, Tadashi Funazaki, Toshihiro Yamaguchi
  • Driving circuit for a fluorescent display apparatus having fewer leads
    Patent number: 4412213
    Abstract: A fluorescent display apparatus having a plurality of anodes linearly arranged and divided into consecutive several groups each containing the same number of anodes. Each of the anodes disposed in corresponding positions of the respective anode groups is electrically connected in parallel, and a control grid is provided in each of the anode groups in an opposed relation. A particular anode representing the value of an input signal is illuminated by energizing one of the anodes in the respective anode groups and one of the control grids.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: October 25, 1983
    Assignee: Futaba Denshi Kogyo K.K.
    Inventors: Takao Kishino, Toshihiro Yamaguchi, Kazunori Tanaka
  • Driving circuit for a fluorescent display apparatus having fewer leads
    Patent number: 4325064
    Abstract: A fluorescent display apparatus having a plurality of anodes linearly arranged and divided into consecutive several groups each containing the same number of anodes. Each of the anodes disposed in corresponding positions of the respective anode groups is electrically connected in parallel, and a control grid is provided in each of the anode groups in an opposed relation. A particular anode representing the value of an input signal is illuminated by energizing one of the anodes in the respective anode groups and one of the control grids.
    Type: Grant
    Filed: November 29, 1979
    Date of Patent: April 13, 1982
    Assignee: Futaba Denshi Kogyo K.K.
    Inventors: Takao Kishino, Toshihiro Yamaguchi, Kazunori Tanaka