Patents by Inventor Katsuhiro Wakita

Katsuhiro Wakita 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).

  • Powder supply device with solar cell
    Patent number: 4785226
    Abstract: A powder supply device with a solar cell is made up of a solar cell, a seconary battery, and a voltage control unit. The voltage control unit controls the output voltage of the solar cell, and produces first and second output voltages. The first output voltage is for charging the secondary battery. The second output voltage is for driving a circuit, such as the logic circuit of an electronic calculator.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: November 15, 1988
    Assignee: Casio Computer Co., Ltd.
    Inventors: Hidetaka Fujisawa, Katsuhiro Wakita