High strength al-zn alloy and method for producing such an alloy product
CA 2881183 C · Owner: Corus Aluminium Walzprodukte Gmbh · Inventors: Heinz, Alfred Ludwig; Benedictus, Rinze; Keidel, Christian Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This disclosure is related to the field of materials in particular the field , of metal alloys. A high-strength Al-Zn alloy with improved combination of corrosion resistance and toughness is , provided. The Al-Zn alloy comprising in weight percentage Zn: 8.1 to 9.5, Cu: , 1.91 to 2.4, Mg: 1.92 to 2.6, and trace amount of Mn, Zr Cr, Fe, Si, Ti, Hf and/or V and , impurities wherein , 0.1Cu+1.3<Mg<0.2Cu+2.15, and the combined amount of Zn Mg and Cu is in , a range of , between 11.5 and 12.5 wt. %. A method for producing the Al-Zn alloy is also provided.
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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 April 9, 2004 and granted June 12, 2018. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2026.
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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.