Patents by Inventor Katsuji Shiono

Katsuji Shiono 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).

  • Patent number: 6262879
    Abstract: An electrochemical device of the present invention includes: a main body formed by rolling up an anode foil, a cathode foil and a separator disposed therebetween, each of the anode foil and the cathode foil having a lead wire connected thereto, wherein the main body is impregnated with an electrolytic solution; a tubular case having a bottom surface for accommodating the main body; and a seal for sealing an opening of the tubular case, which includes a through hole for the lead wire to pass therethrough. The electrolytic solution contains about 5 to about 100 parts by weight of a quaternary salt of a compound having an alkyl-substituted amidine group as an electrolyte with respect to 100 parts by weight of an organic solvent containing at least one of &ggr;-butyrolactone and propylene carbonate. The seal is an elastic body containing a butyl rubber polymer which is a copolymer of isobutylene, isoprene and divinylbenzene, and a peroxide as a vulcanizing agent.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: July 17, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukihiro Nitta, Hiroyuki Matsuura, Yuichiro Tsubaki, Katsuji Shiono
  • Patent number: 6198622
    Abstract: An electrochemical device of the present invention includes: a main body formed by rolling up an anode foil, a cathode foil and a separator disposed therebetween, each of the anode foil and the cathode foil having a lead wire connected thereto, wherein the main body is impregnated with an electrolytic solution; a tubular case having a bottom surface for accommodating the main body; and a seal for sealing an opening of the tubular case, which includes a through hole for the lead wire to pass therethrough. The electrolytic solution contains about 5 to about 100 parts by weight of a quaternary salt of a compound having an alkyl-substituted amidine group as an electrolyte with respect to 100 parts by weight of an organic solvent containing at least one of &ggr;-butyrolactone and propylene carbonate. The seal is an elastic body containing a butyl rubber polymer which is a copolymer of isobutylene and isoprene, and an alkylphenol formalin resin as a vulcanizing agent.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: March 6, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukihiro Nitta, Hiroyuki Matsuura, Yuichiro Tsubaki, Katsuji Shiono
  • Patent number: 5870275
    Abstract: The present invention relates to an electrolyte for use in electronic components and electrolytic capacitors in which said electrolyte is used; including as a solute, a quaternary salt of a compound having a N,N,N'-substituted amidine group, such as 1-methylimidazole, 1-methylbenzoimidazole, 1,2-dimethylimidazoline, 1,2-dimethyl-1,4,5,6-tetrahydropyrimidin e, 1,8-diazabicyclo?5.4.0!undecene-7,1,5-diazabicyclo ?4.3.0!nonene-5 and the like. The electronic components such as electrolytic capacitors and electrochromic display devices, using this electrolyte, have an excellent thermostability, high specific conductivity, and do not degrade or corrode metal, resin or rubber.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: February 9, 1999
    Assignees: Sanyo Chemical Industries, Ltd., Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuji Shiono, Yukihiro Nitta
  • Patent number: 5750730
    Abstract: Fluorine-containing dioxolane compounds and electrolytic solution compositions containing the fluorine-containing dioxolane compounds are disclosed. Lithium secondary batteries or electric double layer capacitors, having various improved characteristics such as improved charge and discharge cycle life or improved durability over a long period of time can be obtained by using the electrolytic solution compositions.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: May 12, 1998
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Tomoharu Nakano, Katsuji Shiono
  • 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
  • Patent number: 5177673
    Abstract: An electrolyte for driving electrolytic capacitors and electrolytic capacitors using the electrolyte are described. The electrolyte comprises at least one quaternary ammonium salt of aliphatic saturated dicarboxylic acid having from 6 to 10 carbon atoms in total or a quaternary ammonium salt of glutaric acid, dissolved in a solvent comprised of an aliphatic polyol. When applied to an electrolytic capacitor, the electrolyte ensures improvements in loss characteristic and high temperature characteristics with time. Thus, the capacitor has a prolonged life.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: January 5, 1993
    Assignees: Matsushita Electric Industrial Co., Ltd., Sanyo Chemical Industries, Ltd.
    Inventors: Hisao Nagara, Hideki Shimamoto, Keiji Mori, Noriki Ushio, Katsuji Shiono, Takaaki Kishi
  • 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
  • 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