Production of aluminum alloy foils having high strength and good rollability
CA 2432694 A1 · Owner: Alcan International Limited · Inventors: Gabryel, Christopher; Jin, Iljoon; Anami, Toshiya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aluminum alloy foil is formed from an alloy containing about 1.2 to 1.7 % by weight Fe and about 0.35 to 0.80 % by weight Si with the balance aluminum , and incidental impurities. The alloy is continuously strip cast to form a strip having a thickness less than about 25 mm which is then cold rolled to , interanneal gauge and interannealed at a temperature of at least 400 ~C. The interannealed strip is cold rolled and further annealed to form the final foil product, having excellent rollability combined with high strength of the final foil.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 13, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.