Patents by Inventor Yoshiteru Kuwae

Yoshiteru Kuwae 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 electrolytic capacitors and electrolytic capacitor using the electrolyte
    Patent number: 5457599
    Abstract: This invention relates to an electrolyte for use in electrolytic capacitors and also to an electrolytic capacitor using the electrolyte. The solute for the electrolyte is a quaternary ammonium salt of either a carboxylic acid selected from the group consisting of phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid and maleic acid, or an alkyl or nitro-substituted compound of the acid. The electrolytic capacitor has improved low temperature characteristics and an improved variation in characteristics at high temperatures in relation to time with a prolonged life.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: October 10, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshiteru Kuwae, Katsuji Shiono, Takaaki Kishi, Hideki Shimamoto, Hisao Nagara, Keiji Mori, Shingo Yoshida
  • Electrolyte for electrolytic capacitors and electrolytic capacitor using the electrolyte
    Patent number: 4821153
    Abstract: This invention relates to an electrolyte for use in electrolytic capacitors and also to an electrolytic capacitor using the electrolyte. The solute for the electrolyte is a quaternary ammonium salt of either a carboxylic acid selected from the group consisting of phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid and maleic acid, or an alkyl or nitro-substituted compound of the acid. The electrolytic capacitor has improved low temperature characteristics and an improved variation in characteristics at high temperatures in relation to time with a prolonged life.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: April 11, 1989
    Assignees: Matsushita Electric Industrial Co., Ltd, Sanyo Chemical Industries, Ltd.
    Inventors: Yoshiteru Kuwae, Katsuji Shiono, Takaaki Kishi, Hideki Shimamoto, Hisao Nagara, Keiji Mori, Shingo Yoshida
  • Non-aqueous liquid electrolyte for electrolytic capacitors and electrolytic capacitors using same
    Patent number: 4652968
    Abstract: Non-aqueous liquid electrolytes for electrolytic capacitors which comprise diazobicyclealkenes and/or salts thereof as a solute. The electrolytes are effective in improving low temperature and high temperature characteristics when applied as electrolytic capacitors. The capacitors using the electrolytes are also described.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: March 24, 1987
    Assignees: Matsushita Electric Industrial Co., Ltd., Sanyo Chemical Industries, Ltd.
    Inventors: Hideki Shimamoto, Yoshio Miyazaki, Yoichi Aoshima, Tsuyoshi Tsunetsugu, Hisao Nagara, Yoshiteru Kuwae, Kazushi Shiono