Patents by Inventor Youichi Ikuta

Youichi Ikuta 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).

  • Color display device having liquid crystal cell and fluorescent display with two different luminous sections
    Patent number: 5142388
    Abstract: A color display device capable of emitting three primary colors of equalized luminance, so that color display of high quality which is free of unevenness may be accomplished. The color display device is so constructed that a fluorescent display section including first and second luminous sections different in luminous characteristics is combined with an optical rotation section and color polarizing plates. The fluorescent display section and optical rotation section are synchronously driven.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: August 25, 1992
    Assignee: Futaba Denshi Kogyo K.K.
    Inventors: Hiroshi Watanabe, Youichi Ikuta
  • Fluorescent display device
    Patent number: 4757234
    Abstract: A fluorescent display device which is capable of substantially reducing reflection by wiring conductors and anode conductors to significantly improve visibility in reading of a display segment. The fluorescent display device is constructed in a manner to arrange anode conductors and wiring conductors each formed of a metallic film through a colored antireflection film on a substrate.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: July 12, 1988
    Assignee: Futaba Denshi Kogyo Kabushiki Kaisha
    Inventors: Youichi Ikuta, Hiroshi Watanabe, Kiyoshi Morimoto