Processes for continuous synthesis of polymer compositions as well as use of same
CA 2428283 C · Owner: Scherer, Markus · Inventors: Cooper, David; Scherer, Markus; Tillery, Larry Stephen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for producing polymer compositions according to which ethylenically unsaturated monomers are polymerized in the presence of ligands that may form a coordination compound with the metal catalyst(s) by way of initiators that comprise a transferable group of atoms and one or more , catalysts that comprise at least one transition metal. The polymerization is characterized in that it is carried out continuously.
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 October 23, 2001 and granted February 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 23, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 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.
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.