Patents by Inventor Shuichi Kugawa

Shuichi Kugawa 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).

  • Accumulator for portable computers
    Patent number: 5039928
    Abstract: A portable electric appliance is provided with a solar energy accumulator. The accumulator is integrally mounted on the electric appliance when the appliance is desired to operate or be transported. When the portable electric appliance is not used, the accumulator is removed from the appliance and moved to a bright place.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: August 13, 1991
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kazuo Nishi, Kunio Suzuki, Mikio Kinka, Akemi Satake, Shuichi Kugawa
  • Photoelectric conversion device
    Patent number: 5035753
    Abstract: A solar cell comprises a plurality of series connected photoelectric conversion structures formed on a substrate. The conversion structure consists of a first semiconductor film on a P-type, an intrinsic semiconductor film formed on the first semiconductor film such that one end thereof extends beyond an end of the first semiconductor film and a second semiconductor film of a second, opposite conductivity type formed on the intrinsic semiconductor film such that one end thereof extends beyond the extended end of the intrinsic semiconductor film and makes direct electrical contact with an end of the first semiconductor film of the adjacent structure.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: July 30, 1991
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kunio Suzuki, Masayoshi Abe, Mikio Kinka, Yasuyuki Arai, Akemi Satake, Kazuo Nishi, Shuichi Kugawa, Noriya Ishida