Streptogramines, their preparation and compositions containing them
CA 2299514 A1 · Owner: Barriere, Jean-Claude · Inventors: Terrier, Corinne; Ronan, Baptiste; Puchault, Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns derivatives of group A of streptogramines of general formula (I) in which R¿1? is a -NR'R'' radical in which R' is a hydrogen atom or a methyl radical and R'' is a hydrogen atom, an alkyl, cycloalkyl allyl, propynyl, benzyl radical or -OR''' R''' being a hydrogen atom, an alkyl, cycloalkyl allyl, propynyl or benzyl radical, or -NR¿3?R¿4? R¿3? and R¿4? representing a methyl radical or forming together with the nitrogen atom to which they are bound a saturated or unsaturated heterocyclic compound with 5 or 6 chains further capable of containing another heteroatom selected among nitrogen oxygen or sulphur; R¿2? is a hydrogen atom or a methyl or ethyl radical and the bond …
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 July 24, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 24, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2020.
- 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.