Fine-grained martensitic stainless steel and method thereof
CA 2515219 C · Owner: Latrobe Steel Company · Inventors: Buck, Robert F
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A martensitic alloy in which the ASTM grain size number is at least 5 including (wt. %) up to about 0.5% C, at least about 5% Cr at least about , 0.5% Ni, up to about 15% Co up to about 8% Cu, up to about 8% Mn, up to about 4% Si, up to about 6% (Mo + W), up to about 1.5% Ti up to about 3% V, up to , about 0.5% Al and at least about 40% Fe.
Read the whole patent
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 February 6, 2004 and granted June 17, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 6, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 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.