Constrained geometry ligands and complexes derived therefrom
CA 2402622 A1 · Owner: Sullivan, Jeffrey M. · Inventors: Sullivan, Jeffrey M.; Gately, Daniel A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel constrained geometry titanium (II) diene complex and ligands of such complexes are described. The novel complex has an olefin polymerization activity substantially in excess of a defined activity standard characteristic of analogous prior art constrained geometry diene complexes. Methods for the synthesis of the novel, high-activity complexes are described.
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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 January 16, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 16, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 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.
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.