Patents by Inventor Yoshikazu Hirata

Yoshikazu Hirata 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).

  • Solid electrolytic capacitor
    Patent number: 6912118
    Abstract: A solid electrolytic capacitor formed with a dielectric coating and a solid electrolyte layer successively formed on a surface of an anode body, wherein the solid electrolyte layer includes a conductive polymer containing at least a fluoroalkylnaphthalenesulfonate ion as a dopant. The conductive polymer can further contain a tetrahydronaphthalenesulfonate ion, a naphthalenesulfonate ion or a benzenesulfonate ion as the dopant. As a result, a solid electrolytic capacitor having a low ESR and a good heat resistance is provided.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: June 28, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kenichiro Matsuzaki, Yohei Kawata, Seiji Omura, Fumio Tatezono, Yoshikazu Hirata
  • SOLID ELECTROLYTIC CAPACITOR
    Publication number: 20050088804
    Abstract: A solid electrolytic capacitor formed with a dielectric coating and a solid electrolyte layer successively formed on a surface of an anode body, wherein the solid electrolyte layer includes a conductive polymer containing at least a fluoroalkylnaphthalenesulfonate ion as a dopant. The conductive polymer can further contain a tetrahydronaphthalenesulfonate ion, a naphthalenesulfonate ion or a benzenesulfonate ion as the dopant. As a result, a solid electrolytic capacitor having a low ESR and a good heat resistance is provided.
    Type: Application
    Filed: October 26, 2004
    Publication date: April 28, 2005
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Kenichiro Matsuzaki, Yohei Kawata, Seiji Omura, Fumio Tatezono, Yoshikazu Hirata
  • Electrical connector
    Patent number: D332598
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: January 19, 1993
    Assignee: Hirose Electric Co., Ltd.
    Inventors: Shigeru Kikuta, Yoshikazu Hirata
  • Electrical connector
    Patent number: D332599
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: January 19, 1993
    Assignee: Hirose Electric Co., Ltd.
    Inventors: Shigeru Kikuta, Yoshikazu Hirata
  • Electrical connector cover case
    Patent number: D332602
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: January 19, 1993
    Assignee: Hirose Electric Co., Ltd.
    Inventors: Shigeru Kikuta, Yoshikazu Hirata