Process for preparing conjugated polymers
CA 2305137 A1 · Owner: Woo, Edmund P. · Inventors: Inbasekaran, Michael; Woo, Edmund P.; Wu, Weishi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing conjugated polymers which comprises contacting (i) monomers having two reactive groups selected from boronic acid C1-C6 boronic acid ester, C1-C6 borane, and combinations thereof with aromatic dihalide-, functional monomers or (ii) monomers having one reactive boronic acid boronic , acid ester, or borane group and one reactive halide-functional group with , each other; (wherein the monomers are selected so that the polymerization reaction product of such has conjugated unsaturated internal groups) in a reaction mixture which contains: (a) an organic solvent in which the polymer forms at least a 1 percent solution; (b) an aqueous solution of an inorganic base …
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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 May 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2020.
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Timeline
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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.