Pyridopyranoazepine derivatives, their preparation and their therapeutic application
CA 2372063 C · Owner: Lochead, Alistair · Inventors: Galli, Frederic; Jegham, Samir; Lochead, Alistair
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns compounds of general formula (I) wherein: R1 represents a hydrogen atom, an alkyl, phenylalkyl phenylhydroxyalkyl, furanylalkyl or , furanylhydroxyalkyl group; R2 represents either a hydrogen or a halogen atom or a trifluoromethyl, cyano, hydroxy, nitro acetyl, alkoxy, amino group of , general formula NR4R5 wherein: R4 and R5 represent each a hydrogen atom or an alkyl group or form, with the nitrogen atom which bears them a C4-C7 cycle, or a phenyl or naphthyl group optionally substituted by a halogen atom or a trifluoromethyl, trifluoromethoxy, cyano hydroxy, nitro, acetyl alkyl, alkoxy, or methylenedioxy group; and R3 represents a hydrogen or halogen atom or an …
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 1, 2000 and granted January 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 1, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2022.
- 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.