High-damage tolerant aluminium alloy product in particular for aerospace applications
CA 2526809 C · Owner: Novelis Koblenz Gmbh · Inventors: Hargarter, Hinrich Johannes Wilhelm; Heinz, Alfred Ludwig; Benedictus, Rinze
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an aluminium alloy wrought product with high strength and fracture toughness and high fatigue resistance and low fatigue crack growth rate, and having a composition of (in wt.%): 0.3 to 1.0 % Mg 4.4 to , 5.5% Cu, 0 to 0.20% Fe, 0 to 0.20% Si 0 to 0.40% Zn, and Mn in a range 0.15 to 0.8 as dispersoids forming element in combination with one or more of dispersoids forming elements selected from the group consisting of: Zr Sc, Cr, Hf, Ag, Ti, V, the balance being aluminium (Al) and other incidental elements, and whereby there is a limitation of the Cu-Mg content such that: - 1.1Mg+5.38<= Cu<= 5.5. The invention further relates to a method of manufacturing such a …
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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 June 3, 2004 and granted November 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 3, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 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.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.