Sintered refractory block based on silicon carbide with a silicon nitride bond
CA 2586783 C · Owner: Jorge, Eric · Inventors: Jorge, Eric; Marguin, Olivier
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sintered refractory block based on silicon carbide (SiC) with a silicon nitride (Si3N4) bond for the manufacture of a aluminium electrolysis vessel characterized in that it comprises, expressed in percentage by weight at least 0.05 % boron and/or between 0.05 and 1.2 % calcium.
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 November 25, 2005 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.