New benzimidazole, benzoxazole and benzothiazole derivatives, their preparation process and the pharmaceutical compositions containing them
CA 2244438 A1 · Owner: Adir Et Compagnie · Inventors: De Nanteuil, Guillaume; Bonnet, Jacqueline; Portevin, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compound with the formula (I): (see Fig. I) in which: R1 represents a halogen atom or group as defined in the description Ra, Rb, identical or different, represent a hydrogen atom an alkyl or hydroxy group, X represents an oxygen or sulfur atom or an NR group R2 represents an optionally substituted aryl group R'2 represents a hydrogen atom or optionally substituted aryl group the isomers thereof and the addition salts thereof with an acid or pharmaceutically acceptable base.
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 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 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.