Expired Canadian patentCanada
Hard-metal carbide and nitride powders for ceramics by carbothermic reduction and the process for manufacturing said powers
CA 1339701 C · Owner: Bachelard, Roland · Inventors: Bachelard, Roland; Joubert, Philippe
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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
- Granted March 10, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 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.
FiledMarch 27, 1987
GrantedMarch 10, 1998
Term endedMarch 10, 2015
Patent numberCA 1339701 C
Classification (IPC)C01B21/06 +2 more
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.