New benzimidazol, benzoxazol and benzothiazol derivitives, the procedure for preparing them and the pharmaceutical compositions which contain them.
CA 2211444 C · Owner: Fradin, Armel · Inventors: Portevin, Bernard; Fradin, Armel; De Nanteuil, Guillaume
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns new compounds based on the general formula (I): (see fig. I) in which R1 represents a halogen atom a hydroxy group, linear or ramified alkoxy (C1-C6) trihalogenomethyl amino, sulphydryl, linear or ramified alkylthio (C1-C6) linear or ramified trialkylammonium (C1-C6) aryloxy, arylthio, arylsulfonyl, arylsulfonyl- oxy cycloalkyl (C3-C7) oxy, cycloalkyl (C3-C7) thio bicycloalkyl (C6-C8) oxy or bicycloalkyl (C6-C8) thio Ra/Rb, identical or different, representing a hydrogen atom or a linear or ramified alkyl group (C1-C6); X represents an atom of hydrogen or sulphur or an NR group R representing a hydrogen atom or a linear or ramified alkyl group (C1-C6); Y represents a …
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 22, 1997 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2019.
- 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.