Patents by Inventor Shouichi Imashuku

Shouichi Imashuku 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).

  • Method and device for inspecting secondary battery precursor and method for manufacturing secondary battery using the inspection method
    Patent number: 7239147
    Abstract: A method for testing a precursor of a secondary cell with high reliability and high efficiency to judge the precursor to be acceptable or defective. The current flowing when a test voltage is applied between a pair of electrodes is measured before an electrolyte is placed between the electrodes. If a current the current value of which exceeds a predetermined reference current value (13) is detected during the time from the start of application of a voltage to a normal secondary cell precursor until the current becomes constant, the precursor is determined to be defective.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: July 3, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshiro Kume, Masashi Shoji, Emiko Igaki, Shuji Tsutsumi, Mikinari Shimada, Masakazu Tanahashi, Akira Takahashi, Shouichi Imashuku
  • Method for testing precursor of secondary cell, its testing instrument, and method for manufacturing secondary cell using the method
    Publication number: 20050242820
    Abstract: A method for testing a precursor of a secondary cell with high reliability and high efficiency to judge the precursor to be acceptable or defective. The current flowing when a test voltage is applied between a pair of electrodes is measured before an electrolyte is placed between the electrodes. If a current the current value of which exceeds a predetermined reference current value (13) is detected during the time from the start of application of a voltage to a normal secondary cell precursor until the current becomes constant, the precursor is determined to be defective.
    Type: Application
    Filed: August 14, 2003
    Publication date: November 3, 2005
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshiro Kume, Masashi Shoji, Emiko Igaki, Shuji Tsutsumi, Mikinari Shimada, Masakazu Tanahashi, Akira Takahashi, Shouichi Imashuku