Double stabilized stainless-type steel and method of manufacture thereof
CA 2109162 C · Owner: Finkl, Charles W. · Inventors: Brada, Guy A.; Underys, Algirdas A.; Finkl, Charles W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A 12 percent stainless-type steel having high polishability characterized by high carbon, moderate Mo and a combination of V and Nb not to exceed about .1 percent, and a method of production which includes forming a vacuum arc remelt electrode by means of vacuum arc degassing treatment and protective pouring.
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 October 25, 1993 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 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.