In-situ polymerization of monoethylenically unsaturated monomers with secondary amines
CA 2452970 A1 · Owner: Bayer Aktiengesellschaft · Inventors: Meyer, Rolf-Volker; Detrembleur, Christophe; Gross, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the preparation of any of well-defined homopolymers random and, block copolymers is disclosed. The process that entails forming a mixture of monomers, a hindered secondary amine and an oxidizing agent is characterized in, the absence of any additional free-radical initiator.
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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 December 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2025.
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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.