Very high mechanical strength steel and method for making a sheet thereof coated with zinc or zinc alloy
CA 2497870 C · Owner: Lapointe, Jean-Luc · Inventors: Moulin, Antoine; Lapointe, Jean-Luc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a very high mechanical strength steel whereof the chemical composition comprises in wt. %: 0.060 % = C = 0.250 %; 0.400 % = Mn = 0.950 %; Si = 0.300 %; Cr = 0.300 %; 0.100 % = Mo = 0.500 %; 0.020 % = AI = 0.100 %; P = 0.100 %; B = 0.010 %; Ti = 0.050 % the rest being iron and impurities resulting from preparation. The invention also concerns a method for making a sheet of said steel coated with zinc or zinc alloy.
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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 September 4, 2003 and granted January 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2025.
- 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
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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.