Aluminum alloy sheet and method for manufacturing the same
CA 2588046 C · Owner: Anami, Toshiya · Inventors: Yasunaga, Kunihiro; Gatenby, Kevin; Kazama, Hitoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aluminum alloy sheet having excellent press formability and stress corrosion cracking resistance, comprising 3.3 to 3.6 percent by weight of Mg and 0.1 to 0.2 percent by weight of Mn furthermore, 0.05 to 0.3 percent by , weight of Fe and 0.05 to 0.15 percent by weight of Si and the remainder , comprising of Al and incidental impurities wherein the sizes of intermetallic , compounds is 5 ~m or less the recrystallized grain size is 15 ~m or less in the region at a depth of 10 to 30 ~m below the sheet surface and the surface , roughness is Ra 0.2 to 0.7 ~m.
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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 July 30, 2004 and granted September 30, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2026.
- 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.