Patents by Inventor Siro Azuma

Siro Azuma 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).

  • Electrical double layer capacitor and production of the same
    Patent number: 4626964
    Abstract: An electrical double layer capacitor containing at least one electrical double layer unit which comprises a pair of electrodes separated by a separator and positioned between a pair of collecting plates with an insulating ring being provided with around the periphery of the electrodes, wherein the electrode comprises active carbon fiber fabric carrying active carbon powder thereon, which has stable capacitance and longer discharging time due to small internal resistance.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: December 2, 1986
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Siro Azuma, Kenichi Yokoyama, Tatsuya Kitai