The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2004
Filed:
Dec. 18, 2002
Kazumitsu Honda, Osaka, JP;
Nario Niibo, Osaka, JP;
Hisao Miyazawa, Shiga, JP;
Yoshihiro Watanabe, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
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. Thereby, an aluminum electrolytic capacitor having high breakdown voltage and high heat resistance, and at the same time excellent strengthened mechanical property against vibration demanded for a capacitor.