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. 05, 1993
Filed:
Jul. 01, 1991
Applicant:
Inventors:
Stephen C Byrne, Monroeville, PA (US);
John K McBride, New Kensington, PA (US);
James R Weaver, Bettendorf, IA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148692 ; 148439 ; 148440 ; 148695 ;
Abstract
An improved method of treating an ingot to be made into lithoplate. The method also includes (a) providing a non-heat treatable aluminum alloy containing magnesium; (b) homogenizing said alloy; (c) rolling said alloy to form a sheet or plate; (d) heating said sheet or plate for a temperature and time sufficient to permit magnesium to migrate to the surface of said metal; and (e) cold rolling said sheet or plate stock to a finished gauge workpiece.