4-amino-3-acyl quinoline derivatives and their use as inhibitors of gastric acid secretion
CA 2125681 A1 · Owner: Riedel, Richard · Inventors: Postius, Stefan; Schaefer, Hartmann; Ife, Robert John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound of formula (I) wherein R1 denotes hydrogen, hydroxyl (OH) halogen or C1-4alkyl, R2 denotes hydrogen or C1-4alkyl, R3 denotes C1-4alkyl, A denotes methylene(-CH2-) ethylene (-CH2CH2-), ethylidene -CH(CH3)trimethylene, (-CH2CH2CH2-), oxyethylene (-O-CH2CH2-) or oxytrimethylene (-O-CH2CH2CH2-), X denotes C1-6alkylene or C2-4alkenylene and Y denotes hydroxyl (OH) or amino (NH2) or a salt, thereof, processes for their preparation pharmaceutical compositions, containing them and their use in therapy as inhibitors of gastric acid secretion.
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 December 10, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2014.
- 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.