N-phenyl glycinamide derivatives, preparation thereof and drugs containing same
CA 2074375 A1 · Owner: Cotrel, Claude · Inventors: Bourzat, Jean-Dominique; Cotrel, Claude; Roussel, Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula (I) in which: R1 is a hydrogen atom an alkyl, alkoxycarbonyl or optionally substituted phenyl radical; R2 is an alkoxy optionally substituted cycloalkyloxy, cycloalkyloxy phenylalkyloxy, polyfluoroalkyloxy, cinnamyloxy -NR5R6 radical; R3 is a phenylamino radical in which the phenyl nucleus may be substituted optionally substituted phenyl, naphthyl indolyl or quinolyl; R4 is a substituted phenyl radical; R5 and R6 are identical or different and represent a hydrogen atom an alkyl, optionally substituted phenyl indanyl, cycloalkylalkyl, cycloalkyl, phenylalkyl radical or R5 and R6 together with the nitrogen atom to which they are linked form a heterocycle; their …
Read the whole patent
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 March 5, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2013.
- 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.