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:
Mar. 14, 2000
Filed:
Dec. 22, 1997
Applicant:
Inventors:
Hidenori Uchi, Kitaibarakishi, JP;
Masakazu Furukawa, Kitaibarakishi, JP;
Tadao Fujihira, Sakaishi, JP;
Ichizo Tsukuda, Kishiwadasi, JP;
Eizo Isoyama, Nara, JP;
Assignees:
KDK Corporation, Ibaraki, JP;
Showa Aluminum Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01G / ;
U.S. Cl.
CPC ...
361509 ; 361500 ; 361502 ; 361503 ; 361508 ; 361516 ;
Abstract
An aluminum electrode foil for an electrolytic capacitor has a sponge-like etching layer formed on at least one of the surfaces thereof, and the sponge-like etching layer is reduced in a direction of thickness. The aluminum density of the reduced sponge-like etching layer `d2` is set from 0.8 to 2.2 g/cm.sup.3.