Supported polymerisation catalysts
CA 2534836 C · Owner: Ineos Sales (Uk) Limited · Inventors: Kimberley, Brian Stephen; Mastroianni, Sergio; Jacobsen, Grant Berent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A supported polymerisation catalyst system is prepared by a method comprising the following steps: (i) addition of a cocatalyst to a porous support (ii) , mixing a polymerisation catalyst with a polymerisable monomer and (iii) , contacting together the components resulting from steps (i) and (ii). The porous support is preferably silica and the polymerisation catalyst is preferably a metallocene. The polymerisable monomer is typically 1-hexene and the supported catalyst system provides advantages a slowly decaying activity profile particularly when operating in the gas phase.
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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 August 4, 2004 and granted November 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 4, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 4, 2026.
- 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.