Co-cr-mo powder metallurgy articles and process for their manufacture
CA 2178808 C · Owner: Crs Holdings, Inc. · Inventors: Del Corso, Gregory J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A powder metallurgy article formed from a Co-Cr-Mo alloy powder and a method for making the article are disclosed. The Co-Cr-Mo alloy powder contains in , weight percent, about 0.35 % max. C about 1.00 % max. Mn, about 1.00 % max Si, about 26.0-30.0 % Cr, about 5.0-7.0 % Mo about 3 % max Ni, about 0.25 % , max. N about 1.00 % max. Fe, about 0.01 % max. of oxide forming metals and , the balance is essentially Co. Within their respective weight percent limits C and N are controlled such that they satisfy the relationship: 62.866 + 360.93 x (%C) + 286.633 x (%N) - 682.165 x (%C)2 - 641.702 x (%N)2 >= 120.
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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 November 30, 1994 and granted June 5, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 30, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2016.
- 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.