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:
Feb. 17, 1976
Filed:
Apr. 29, 1975
Applicant:
Inventors:
Gordon A Conn, Verona, PA (US);
William R Gass, Pittsburgh, PA (US);
Assignee:
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ; C25D / ;
U.S. Cl.
CPC ...
204-4 ; 204-9 ; 204 33 ; 2041415 ;
Abstract
A metal article is produced by: (1) providing an aluminum master substrate, the surface of which may be smooth or patterned; (2) making the aluminum master substrate cathodic, in an acid or acid salt solution which will not etch aluminum, at a current density of between about 10 to 500A/sq. ft., at solution temperatures of up to about 50.degree.C; (3) coating the surface of the aluminum master substrate with a thin metal layer and (4) dissolving the aluminum master substrate, to provide a metal foil article that is a negative duplicate of the smooth or patterned aluminum master substrate surface.