Patents by Inventor Keiji Shimada

Keiji Shimada 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).

  • Process for producing solar cells and solar cells produced thereby
    Patent number: 6184056
    Abstract: A process for producing a solar cell comprises the steps of; forming at least one electrode on a first surface of a semiconductor substrate for constructing a solar cell, attaching a support substrate to the first surface of the semiconductor substrate on which said electrode is formed, and then processing the semiconductor substrate into a thin-film semiconductor substrate.
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: February 6, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuyo Nakamura, Keiji Shimada
  • Interconnector and electronic device element with the interconnector
    Patent number: 5430616
    Abstract: An interconnector includes a first connecting portion connected to a front surface electrode of a solar cell, a second connecting portion connected to a rear surface electrode of another solar cell connected in serial direction, and a stress relief portion formed between the first connecting portion and the second connecting portion for absorbing displacement. The width of the first connecting portion in the parallel direction is made smaller than the width of the stress relief portion in the parallel direction. By this structure, the width of the front surface electrode of the solar cell can be reduced, the effective light receiving area of the solar cell can be increased, and therefore the efficiency in generating power can be improved.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: July 4, 1995
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tomoji Katsu, Keiji Shimada, Hideki Yoshioka
  • Method of checking a pickup load cell in a rotary tableting machine
    Patent number: 5229044
    Abstract: A method is provided for checking a pickup load cell in a tablet-making machine which detects the compressive force applied to a tablet being formed. According to the method, a dummy tablet-forming die formed on a support block is inserted into a selected one of the die-receiving holes formed in a rotary table in place of a real die. A reference load cell is put on the support block, and the reference load cell and the support block are sandwitched between an upper pressure rod in place of an upper punch and a lower pressure rod in place of a lower punch. Measurements are made by both the pickup load cell and the reference load cell as the reference load cell is compressed between a pair of pressure rollers, and the value of the compressive force detected by the pickup load cell is corrected in accordance with the value of the compressive force detected by the reference load cell.
    Type: Grant
    Filed: October 20, 1992
    Date of Patent: July 20, 1993
    Assignee: Kikusui Seisakusho Ltd.
    Inventors: Yasuo Shimada, Keiji Shimada, Giichiro Kowada