Cold work steel and cold work tool
CA 2488793 C · Owner: Uddeholm Tooling Aktiebolag · Inventors: Johansson, Boerje; Sandberg, Odd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a cold work steel having the following chemical composition in weight-%: 0.60-0.85 C from traces to 1.5 (Si+Al) 0.1-2.0 Mn 3.0- 7.0 Cr 1.5-4.0 (Mo+ ), however max. 1.0 W 0.30-0.65 V max. 0.1 of each of Nb Ti, and Zr max. 2.0 Co max. 2.0 Ni balance essentially only iron and unavoidable impurities.
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 June 6, 2003 and granted January 26, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 6, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 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
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.