A catalyst composition and methods for its preparation and use in a polymerization process
CA 2332324 A1 · Owner: Univation Technologies Llc · Inventors: Glowczwski, David Michael; Kuo, Chi-I; Ackerman, Steven Kent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a carboxylate metal salt. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(s). In particular the , polymerization catalyst system is supported on a carrier. More particularly the polymerization catalyst comprises a bulky ligand metallocene-type catalyst system.
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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 June 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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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.