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:
Jun. 11, 2002
Filed:
May. 24, 2000
Alcan International Limited, , CA;
Abstract
A process for the production of a base foil of an aluminum alloy is provided which comprises a first heating step in which a cold-rolled plate derived from a continuously cast-rolled plate is maintained at a temperature between higher than 350° C. and lower than 450° C. for longer than 0.5 hour, the cast-rolled plate being comprised of a Al-Fe-Si type aluminum alloy, the aluminum alloy containing Fe in a content between more than 0.3% by weight and less than 1.2% by weight and Si in a content between more than 0.20% by weight and less than 1% by weight and having a Si/Fe ratio between above 0.4 and below 1.2, and a second heating step in which the resultant plate is maintained at a temperature between higher than 200° C. and lower than 330° C. for longer than 0.5 hour. The base foil is substantially free of macroscopic and microscopic rib patterns on its rolled and mat surfaces.