Patents by Inventor Yukari Washio

Yukari Washio 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).

  • Electrolyte for use in electrolytic capacitors
    Patent number: 5055974
    Abstract: An electrolyte for use in electrolytic capacitors is provided. The electrolyte comprises a specified quaternary ammonium salt of a boric acid complex as a solute. A capacitor in which the electrolyte is used displays stable electrical characteristics at high temperatures as well as high sparking voltage and long life.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: October 8, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukari Washio, Nobuhiro Takeishi, Hideki Shimamoto, Keiji Mori, Noriki Ushio, Katsuji Shiono, Takaaki Kishi, Hideo Samura