1-phenylalkyl-piperazines
CA 2489449 A1 · Owner: Riva, Carlo · Inventors: Riva, Carlo; Motta, Gianni; Leonardi, Amedeo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I) (R and R1 are a wide range of substituents Q is CO, CHOH or CHOR2, R2 is alkyl, alkenyl alkynyl or cycloalkyl group, each of , which is optionally substituted or is alkanoyl, alkanoyoxy, aminocarbonyl alkylaminocarbonyl, dialkylaminocarbonyl aminothiocarbonyl, alkylaminothiocarbonyl or dialkylaminothiocarbonyl R3 is H, alkyl, -alkenyl, alkynyl, cycloalkyl aryl or heterocyclic group, each of which is optionally substituted, n is 1 or 2, A is a bond or a methylene or ethylene group and R4 is an aryl or heteroaryl group, either of which is optionally substituted) have affinity for serotoninergic receptors. These compounds and their enantiomers, diastereoisomers, …
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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 June 16, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2025.
- 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.