Expired Canadian patentCanada
Catalytic cracking process
CA 2179945 C · Owner: Phillips Petroleum Company · Inventors: Senn, Dwayne R.; Kallenbach, Lyle R.; Johnson, Marvin M.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for catalytically cracking a hydrogen-containing oil employs a cracking catalyst comprising aluminum borate and zirconium borate.
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 June 26, 1996 and granted December 5, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 26, 1996
GrantedDecember 5, 2000
Term endedJune 26, 2016
Patent numberCA 2179945 C
Classification (IPC)C07C11/02 +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.