Patents by Inventor Hisao Miyazawa

Hisao Miyazawa 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: 6690573
    Abstract: An electrolytic capacitor is provided, comprising a capacitor element constituted in the way that an anode foil and a cathode foil with a lead for external connection connected thereto, respectively, are wound, with a separator intervening between them, and a cylindrical metal case, having a bottom, including the capacitor element, and a sealing plate for sealing an opening of the metal case, wherein a gel-like polymer having ion conductivity is formed inside and outside part of the above described capacitor element, and the above described gel-like polymer firmly attached to an inside the above described metal case, and thus the capacitor element is fixed. The gel-like polymer having conductivity is a mixture with an acrylic copolymer, to which an electrolytic solution is infiltrated to uniformly distribute the electrolytic solution.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: February 10, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazumitsu Honda, Nario Niibo, Hisao Miyazawa, Yoshihiro Watanabe
  • Publication number: 20030169559
    Abstract: An electrolytic capacitor is provided, comprising a capacitor element constituted in the way that an anode foil and a cathode foil with a lead for external connection connected thereto, respectively, are wound, with a separator intervening between them, and a cylindrical metal case, having a bottom, including the capacitor element, and a sealing plate for sealing an opening of the metal case, wherein a gel-like polymer having ion conductivity is formed inside and outside part of the above described capacitor element, and the above described gel-like polymer firmly attached to an inside the above described metal case, and thus the capacitor element is fixed. The gel-like polymer having conductivity is a mixture with an acrylic copolymer, to which an electrolytic solution is infiltrated to uniformly distribute the electrolytic solution.
    Type: Application
    Filed: December 18, 2002
    Publication date: September 11, 2003
    Inventors: Kazumitsu Honda, Nario Niibo, Hisao Miyazawa, Yoshihiro Watanabe
  • Patent number: 6590761
    Abstract: A capacitor includes a capacitor element having leads accommodated along with electrolyte solution in a metallic case, and a sealing plate that seals the opening of the metallic case. In the capacitor, a center axis of a threaded portion provided in a terminal block on the sealing plate is constituted to be parallel to a planar portion of the sealing plate. Hence, the center axis of the threaded portion is vertical to a circuit board when mounting the capacitor onto the circuit board. Thereby, a series of operation from the insertion to the tightening of the mounting screw is done very easily.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: July 8, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hisao Miyazawa, Tsuyoshi Yoshino
  • Publication number: 20020186523
    Abstract: A capacitor includes a capacitor element having leads accommodated along with electrolyte solution in a metallic case, and a sealing plate that seals the opening of the metallic case. In the capacitor, a center axis of a threaded portion provided in a terminal block on the sealing plate is constituted to be parallel to a planar portion of the sealing plate. Hence, the center axis of the threaded portion is vertical to a circuit board when mounting the capacitor onto the circuit board. Thereby, a series of operation from the insertion to the tightening of the mounting screw is done very easily.
    Type: Application
    Filed: June 7, 2002
    Publication date: December 12, 2002
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Hisao Miyazawa, Tsuyoshi Yoshino