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:
Jun. 21, 2005
Filed:
Jun. 25, 2004
Koji Shimoyama, Itami, JP;
Yuji Mido, Higashiosaka, JP;
Koji Shimoyama, Itami, JP;
Yuji Mido, Higashiosaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A capacitor element includes a valve metal foil including a core layer and a porous layer on the core layer, a dielectric layer on a portion of the valve metal foil excluding an end portion of the valve metal foil, a solid electrolyte layer on the dielectric layer, a collector layer on the solid electrolyte layer, and a zinc layer on the end portion of the valve metal foil. A solid electrolytic capacitor includes the capacitor element, an insulating case for sealing the capacitor element as to expose the zinc layer, a nickel layer on the zinc layer, and an electrode provided on the case and electrically connected to the collector layer. The solid electrolytic capacitor has a small impedance even at high frequencies, and has a small overall size and a large capacitance.