Patents by Inventor Minako Fujiyoshi

Minako Fujiyoshi 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).

  • Electric double layer capacitor, electrolytic solution therefore and method for suppressing self-discharge in electronic component
    Patent number: 6621684
    Abstract: Electric double layer capacitors having improved stability of electrochemical properties and improved retention of residual voltage, imparted by using an electrolytic solution containing a polymer, such as acrylonitrile/stryrene copolymer, giving an increased electrolyte ion difusion resistance are provided. The capacitors are useful for electro-storage devices, such as back-up power source for real time clocks. The polymer is useful for suppressing self discharge in electronic components, such as electric double layer capacitor, aluminum electrolytic capacitors, electro-chemical capacitor and secondary batteries.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: September 16, 2003
    Assignees: Matsushita Electric Insustrial Co. Ltd., Sanyo Chemical Industries, Ltd.
    Inventors: Hideki Shimamoto, Yoshinori Takamuku, Yukiya Kobayashi, Minako Fujiyoshi
  • Electric double layer capacitor, electrolytic solution therefore and method for suppressing self-discharge in electronic component
    Publication number: 20020036884
    Abstract: An electric double layer capacitors, are disclosed, having improved stability of electrochemical properties and improved retention of residual voltage, imparted by using an electrolytic solution containing a polymer, such as acrylonitrile/ styrene copolymer, giving an increased electrolyte ion difusion resistance. The capacitors are useful for electro-storage devices, such as back-up power source for real time clocks.
    Type: Application
    Filed: June 19, 2001
    Publication date: March 28, 2002
    Inventors: Hideki Shimamoto, Yoshinori Takamuku, Yukiya Kobayashi, Minako Fujiyoshi