Expired Canadian patentCanada
Method of reducing sludge accumulation from a tar sands hot water process
CA 976102 A · Owner: Great Canadian Oil Sands · Inventors: Van Dyck Fear, James; Baillie, Robert A.
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 October 14, 1975. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 14, 1992.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedOctober 14, 1975
Term endedOctober 14, 1992
Patent numberCA 976102 A
Classification (IPC)B03B9/02
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.