Canadian application, no grantCanada
Oligomerization of olefins
CA 2479466 A1 · Owner: Saleh, Ramzi Y. · Inventors: Godwin, Allen D.; Stanat, Jon E.; Turner, David W.
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 selectivated molecular sieve, e.g. ZSM-22 or ZSM-23 is used as olefin , oligomerization catalyst to provide product e.g. octenes and dodecenes from , butene having a low degree of branching and hindered double bonds.
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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 March 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 2025.
- 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 28, 2003
GrantedNo grant recorded
Term endedMarch 28, 2023
Patent numberCA 2479466 A1
Classification (IPC)C07C2/12 +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.