Steel and method for producing an intermediate product
CA 2424074 C · Owner: Gehricke, Bernd Milo · Inventors: Gehricke, Bernd Milo; Bredenbreuker, Frank; Ernst, Claudia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a steel in particular , for tools exposed to corrosion of the following , composition (in mass-%): C: min. 0.02 and max. 0.12 %; Si: max. 1.5 %; Mn: more than 1.0 - 2.50 %; P: max. 0.035 %; S: min. 0.04 % and less than 0.15 %; Cr: more than 8.0 % and less than 12 %; Mo: more than 0.0 % and max. 0.20 %; V: more than 0.0 % and max. 0.25 %; Nb: more than 0.1 % and max. 0.5 %; N: at least 0.02 % and max. 0.12 %; Ni: max. 0.5 %; B: max. 0.005 %; Cu: max. 0.3 %; Al: max. 0.035 %; Sn: max. 0.035 %; As: max. 0.02 %; at least one of the elements Ca, Mg or Ce wherein the sum , of the contents of these elements is at least 0.0002 % and max. 0.015 %; with the …
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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 January 25, 2002 and granted March 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2024.
- 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.