Canadian application, no grantCanada
Ethylene polymerization process
CA 2396629 A1 · Owner: Liu, Jia-Chu · Inventors: Mack, Mark P.; Lee, Clifford C.; Wang, Shaotian
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 gas phase polymerization of ethylene is disclosed. The process uses a singlesite catalyst that contains a heteroatomic ligand and produces polyethylene that has a reduced density.
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 January 24, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 24, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 24, 2001
GrantedNo grant recorded
Term endedJanuary 24, 2021
Patent numberCA 2396629 A1
Classification (IPC)C08F2/34 +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.