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:
Apr. 05, 2005
Filed:
Sep. 20, 2001
Taro Kato, Kyoto, JP;
Akira Koyama, Kyoto, JP;
Masato Akao, Kyoto, JP;
Tadao Fujihira, Sakai, JP;
Tomoaki Yamanoi, Sakai, JP;
Jin Zhang, Sakai, JP;
Taro Kato, Kyoto, JP;
Akira Koyama, Kyoto, JP;
Masato Akao, Kyoto, JP;
Tadao Fujihira, Sakai, JP;
Tomoaki Yamanoi, Sakai, JP;
Jin Zhang, Sakai, JP;
Nichicon Corporation, Kyoto, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
An aluminum material for electrolytic capacitor electrodes, the aluminum material having aluminum purity of 99.9% or more, consisting of: Si: 2 to 50 ppm; Fe; 2 to 50 ppm; Cu: 15 to 150 ppm; Zn: 1 to 80 ppm; Pb: 0.1 to 3 ppm; at least one of Zr and V: 11 ppm or more, a total content of the at least one of Zr and V being 11 to 100 ppm; and the balance being Al and impurities, wherein a content of B is controlled to be 2 ppm or less. In the aluminum material, Ti: 1 to 30 ppm, Mn group composition (at least one of Mn, Ga, Mg and Ca): 1 to 50 ppm in total, and In group composition (at least one of In, Sn, Sb): 1 to 30 ppm in total are selectively added. A method for manufacturing an aluminum foil for electrolytic capacitor electrodes according to the present invention, comprises the steps of: rolling the aforementioned aluminum material into a foil; and performing final annealing of the foil at the temperature of 430 to 580° C.