Expired Canadian patentCanada
Activation of hydrocarbon synthesis catalyst
CA 2104641 C · Owner: Mitchell, Willard Neal · Inventors: Mitchell, Willard Neal
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 fresh, reduced hydrocarbon synthesis catalyst is activated by contact with hydrogen at elevated temperatures and pressures and in the presence of liquid hydrocarbons, preferably sufficient to immerse, the catalyst therein.
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 August 23, 1993 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 23, 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.
FiledAugust 23, 1993
GrantedFebruary 1, 2000
Term endedAugust 23, 2013
Patent numberCA 2104641 C
Classification (IPC)B01J23/94 +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.