Ion-conductive polymers
CA 2206207 C · Owner: Rosenmeier, Lars · Inventors: Knutz, Boye Cornils; Rosenmeier, Lars
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ion-conductive polymers with high ion conductivity and containing covalently bound ion complexes of one of formulas (Ia-Ic) wherein M+ is H+, Li+, Na+, or , K+; m is an integer in the range 0-4; m' is an integer in the range 0-7; m" is an integer in the range 0-8; and each R independently is halogen; -CO-O- -CO-, O-,M+, or -SO2-O-,M+; cyano; nitro; C1-5 alkoxy; optionally substituted phenyl or phenoxy; -CONR5R6 or -NR5R6 where R5 and R6 independently are hydrogen C1-, 5 alkyl, optionally substituted phenyl phenylcarbonyl, or C1-6 alkanoyl; -, N(R5)-CO-R7 where R7 is hydrogen C1-5 alkyl, C2-5 alkenyl, C2-5 alkynyl or , optionally substituted phenyl; R7-CO- R7-O-CO-, R7-CO-O-, or …
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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 November 30, 1995 and granted July 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 30, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2017.
- 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.