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.

Date of Patent:
Jan. 05, 2010

Filed:

Jul. 24, 2008
Applicants:

Tatsuji Aoyama, Kyoto, JP;

Hiroyuki Matsuura, Shiga, JP;

Shigetaka Furusawa, Kyoto, JP;

Yukiya Shimoyama, Osaka, JP;

Kazuhiko Mikami, Shimane, JP;

Inventors:

Tatsuji Aoyama, Kyoto, JP;

Hiroyuki Matsuura, Shiga, JP;

Shigetaka Furusawa, Kyoto, JP;

Yukiya Shimoyama, Osaka, JP;

Kazuhiko Mikami, Shimane, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01G 9/04 (2006.01); H01G 9/145 (2006.01);
U.S. Cl.
CPC ...
Abstract

A solid electrolytic capacitor that includes a cathode foil and solid electrolyte made of conductive polymer. This cathode foil is made by providing a nickel layer on a surface of a base material made of valve metal. This nickel layer includes a layer containing only nickel and a layer containing nickel oxide. Both large capacitance and low equivalent series resistance are achievable at the same time with this simple structure at low cost.


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