Expired Canadian patentCanada
Hydrocarbon treatment
CA 2088064 C · Owner: Exxon Chemical Patents, Inc. · Inventors: Van Vliet, Arie; De Munck, Nicolas A.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Treatment of sulphur bearing hydrocarbons especially olefin feedstocks to the , oxo process with a nickel-containing catal-, yst, especially spent hydrogenation catalyst which may be amine treated.
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 July 25, 1991 and granted July 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 25, 1991
GrantedJuly 16, 2002
Term endedJuly 25, 2011
Patent numberCA 2088064 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.