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:
Jan. 17, 1984
Filed:
Aug. 06, 1982
Applicant:
Inventor:
James L Stevens, Irmo, SC (US);
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ; C25D / ;
U.S. Cl.
CPC ...
204 33 ; 204 / ; 204 58 ;
Abstract
The invention involves a method of preparing aluminum foil for use as an anode in electrolytic capacitors. The resultant electrolytic capacitor is improved by subjecting the etched aluminum foil to a heat treatment of 100.degree. to 600.degree. C. for about 10 seconds to 20 minutes prior to the treatment with nitric acid.