Two-component supported catalysts and their use for gas-phase polymerisation
CA 2247571 A1 · Owner: Steinhauser, Norbert · Inventors: Steinhauser, Norbert; Windisch, Heike
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 two-component supported catalyst consisting of, a) at least one transition metal compound applied on to an inorganic or polymeric organic supporting material, the metal being selected from the group of the d and f elements of the periodic table according to Mendeleev b) at least one organometallic compound applied on to an inorganic or polymeric organic supporting material, the metal being selected from the group of the IIa, IIb and IIIb elements of the periodic table (F.A. Cotton G. Wilkinson, Anorganische Chemie, 4th edition VCH Verlagsgesellschaft mbH, Weinheim, 1985) and c) optionally at least one modifier which is supported on a) and/or on b) the …
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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 September 16, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2020.
- 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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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.