Patents by Inventor Kenichi Owaki

Kenichi Owaki 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).

  • Gas discharge display device including plurality of discharge panel units with intermediate light absorbing plates
    Patent number: 4065698
    Abstract: A gas discharge display device of multilayer structure comprises a plurality of discharge panel units in stacked relation to each other. Ultraviolet ray absorption layers are located between the discharge panel units. Phosphorescent material emits light of different brightness in proportion to the volume of ultraviolet rays from each discharge panel unit which rays excite such phosphorescent material. The phosphorescent material is supported on the discharge panel unit on the display surface side of the device.
    Type: Grant
    Filed: September 2, 1976
    Date of Patent: December 27, 1977
    Assignee: Fujitsu Limited
    Inventors: Kenichi Owaki, Shizuo Ando, Norihiko Nakayama
  • Gas discharge device having a function of shifting discharge spots
    Patent number: 3944875
    Abstract: Discharge spots on a display device can be shifted by using the primary current effect. For the purpose of shifting the discharge spots, electrodes with a right angle to a shift direction are connected periodically to a plurality of buss to which a series of sustaining signals are supplied in a predetermined time differences. This function of shifting the discharge spots can simplify the peripheral circuit of the display device and also increase a domain of the application of this kind of display device, such as a plasma display panel.
    Type: Grant
    Filed: May 17, 1974
    Date of Patent: March 16, 1976
    Assignee: Fujitsu Limited
    Inventors: Kenichi Owaki, Toshinori Urade, Tadatsugu Hirose