New polyether based monomers and highly cross-linked amphiphile resins
CA 2757366 C · Owner: Matrix Innovation Inc. · Inventors: Cote, Simon
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 cross-linked polyether which is obtained by polymerization of et least one monomer selected from the group consisting of (a) (.alpha.-X-methyl) vinyl-EWG (.alpha.-X- methyl) vinyl-ERG, or (.alpha.-X-methyl) vinyl-aryl where X is oxygen, sulfur, PEG, PPG or poly (THF); (b) a monomer which is polymerizable with a PEG PPG or poly (THF) cross-linker having at least one (.alpha.-X-methyl) vinyl-EWG (.alpha.-X-methyl) vinyl-ERG or (.alpha.-X- methyl) vinyl-aryl where X is oxygen, sulfur, PEG, PPG, or poly (THF); (c) a PEG PPG, or poly (THF) cross-linker having at least an acrylamide or a methacrylamide end group; and (d) mixtures thereof. Various monomers resins …
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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 January 14, 2014. 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.