Patents by Inventor Hidetoshi Akao

Hidetoshi Akao 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).

  • Patent number: 6824905
    Abstract: A power supply system generates supply electric power by using a power generation fuel. The system includes a fuel charged portion in which the power generation fuel is charged, a power generator which generates power generation electric power by using the power generation fuel, an output controller which operates or stops the power generator and, a start-up controller which supplies start-up electric power used for operating the output controller to the output controller.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: November 30, 2004
    Assignee: Casio Computer Co., Ltd.
    Inventors: Masaharu Shioya, Hidetoshi Akao
  • Publication number: 20020094462
    Abstract: A power supply system generates supply electric power by using a power generation fuel. The system includes a fuel charged portion in which the power generation fuel is charged, a power generator which generates power generation electric power by using the power generation fuel, an output controller which operates or stops the power generator and, a start-up controller which supplies start-up electric power used for operating the output controller to the output controller.
    Type: Application
    Filed: January 10, 2002
    Publication date: July 18, 2002
    Applicant: Casio Computer Co., Ltd.
    Inventors: Masaharu Shioya, Hidetoshi Akao
  • Patent number: 6124909
    Abstract: In a liquid crystal display device using color filters, the area of each of color filters arranged on the inner surface of one of substrates in correspondence with the pixel areas is set to be smaller than that of each pixel area to form non-colored light exit areas, and color pixels are displayed with non-colored light which is not transmitted through the color filters and colored light which is transmitted through the color filters. Since high-luminance color pixels are displayed with these colored light and non-colored light, the screen can be made brighter. The liquid crystal display device further includes a reflecting member for reflecting external light incident from the front side of the device and transmitted through the liquid crystal layer toward the front side.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: September 26, 2000
    Assignee: Casio Computer Co., Ltd.
    Inventors: Takashi Miyashita, Tetsushi Yoshida, Hidetoshi Akao, Tsuyoshi Toyoshima, Jiro Takei