Tempered martensitic steel, method of producing a part from said steel and part thus obtained
CA 2607446 C · Owner: Montagnon, Jacques · Inventors: Montagnon, Jacques; Mons, Claude; Peslerbe, Isabelle
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to steel which is characterised by the following composition as expressed in percentages by weight: - C = 0.18 0.30 % - Co = 5 -7 %, - Cr = 2 - 5 %, - Al = 1 - 2 % - Mo + W/2 = 1 - 4 %, - V = trace 0.3 % - Nb = trace 0.1 %, - B = trace - 50 ppm - Ni = 10.5 - 15 % with Ni >= 7 + 3.5 Al - Si = trace 0.4 %, - Mn = trace 0.4 % - Ca = trace - 500 ppm, - Rare earths = trace - 500 ppm - Ti = trace - 500 ppm, - O = trace - 200ppm if the steel is obtained by means of powder metallurgy or trace - 50 ppm if the steel is produced in air or under a vacuum from molten metal - N = trace - 100 ppm, - S = trace - 50 ppm - Cu = trace - 1 %, and - P = trace - 200 ppm the remainder …
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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 20, 2006 and granted January 6, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.