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:
May. 18, 2004
Filed:
Dec. 21, 2001
Toyo Aluminium Kabushiki Kaisha, Osaka, JP;
Abstract
An aluminum alloy contains at least 0.0001 mass % and not more than 0.03 mass % of copper, at least 0.0005 mass % and not more than 0.2 mass % of silicon, at least 0.5 mass % and not more than 4 mass % of manganese and at least 0.5 mass % and not more than 3 mass % of iron, and the rest contains aluminum and unavoidable impurities. The aluminum alloy further contains at least one of at least 0.01 mass % and not more than 0.5 mass % of chromium, at least 0.01 mass % and not more than 0.5 mass % of titanium and at least 0.01 mass % and not more than 0.5 mass % of zirconium. An aluminum alloy foil is prepared by heating up the aluminum alloy to a temperature of at leas 350° C. and not more than 580° C., holding the same immediately after the heating up or retaining an ingot of the aluminum alloy at a temperature of at least 350° C. and not more than 530° C. for not more than 15 hours, thereafter performing hot rolling at a starting temperature of at least 350° C. and not more than 530° C., thereafter performing cold rolling and thereafter performing softening.