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:
Aug. 29, 1989
Filed:
Jul. 05, 1988
Applicant:
Inventors:
James L Stevens, Irmco, SC (US);
Roland F Dapo, Columbia, SC (US);
Assignee:
North American Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ;
U.S. Cl.
CPC ...
204 27 ; 204 28 ; 204 33 ; 204 383 ; 295701 ; 361509 ;
Abstract
Capacitance of anodized aluminum foil is increased by treating the foil after etching but before anodizing with an aqueous solution of a salt of valve metal, the oxide of which has a dielectric constant of at least about 20 and heating the foil to convert the salt to an oxide.
Stevens, James. (1989). Method of improving the capacitance of anodized aluminum foil (U.S. Patent No. 4861439). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4861439
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile