Treatment of cognitive disorders
CA 2105385 C · Owner: Costall, Brenda · Inventors: Perregaard, Jens Kristian; Costall, Brenda
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1-Aryl-3-(4-piperidyl)-indole derivatives having general formula (I) wherein , R1 is hydrogen, halogen, alkyl alkoxy, hydroxy, cyano, nitro, alkylthio trifluoromethyl, trifluoromethylthio, alkylsulfonyl amino, alkylamino or dialkylamino; R is optionally substituted phenyl or a heteroaromatic group; and R2 is hydrogen cycloalkyl, alkyl or alkenyl, optionally substituted with one or two hydroxy groups or R2 is a group of formula (IV), wherein n is an integer from 2-6; W is oxygen sulphur or N-R3, wherein R3 is H, alkyl or cycloalkyl; U is nitrogen or carbon; Z is -(CH2)m-, m being 2 or 3, or Z is -CH=CH-, 1,2-phenylene, or-COCH2- or-CSCH2-; V is oxygen sulphur, CH2, or , NR4, wherein R4 is …
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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 February 28, 1992 and granted August 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2014.
- 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.