Cold work steel made by powder metallurgy
CA 1339767 C · Owner: Roberts, William · Inventors: Roberts, William; Johansson, Borje
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a cold work steel having a very high resistance to wear and good impact strength made powder-metallurgically through the consolidation of metal powder to a dense body. The powder has the following chemical composition expressed in weight-%: 0.5-2.5 C, 0.1-2 Si, 0.1-2 Mn, 0.5-1.5 N max 15 Cr, preferably 6.5-11, Cr, max 4 Mo max 1 W, 3-15 V, wherein up to half the amount of vanadium can be replaced by 1.5 times as much niobium and part of the, vanadium can be replaced by titanium at a content up to four times the content of nitrogen and the double amount of zirconium at a content up to eight times the content of nitrogen and wherein the ratio V/(C +, N) shall amount …
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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
- Granted March 24, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2015.
- 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.