Canadian application, no grantCanada
Olefin polymerization catalysts containing a pyrrole bisimine ligand
CA 2447073 A1 · Owner: Cook, Jessica A. · Inventors: Shulman, Inna; Bielak, John Joseph; Cook, Jessica 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
Polydenate substituted pyrrole based chelants metal complexes containing the , same, olefin polymerization catalyst compositions and polymerization , processes using the same.
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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 April 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 25, 2002
GrantedNo grant recorded
Term endedApril 25, 2022
Patent numberCA 2447073 A1
Classification (IPC)C07F7/00 +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.