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:
Oct. 17, 2006
Filed:
Nov. 12, 2003
Tomoko Kawashima, Osaka, JP;
Yukifumi Takeda, Hyogo, JP;
Kazuo Tadanobu, Kyoto, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A solid electrolytic capacitor includes a valve metal on which surface a dielectric oxide film layer, a solid electrolyte layer, and a cathode layer are formed in this order. The cathode layer includes a silver layer which is formed of silver particles and at least one of phenolic novolak type epoxy resin represented by formula (1) and trishydroxyphenylmethane type epoxy resin represented by formula (2). Not less than 90 wt. % of the silver particles are occupied by flaky silver particles, which account for not less than 50 vol. % and not greater than 90 vol. %. This capacitor shows excellent characteristics in ESR and impedance.