Pharmaceutically active basic nitro-phenyl-dihydropyridine amides
CA 2000080 A1 · Owner: Stoltefuss, Jurgen · Inventors: Bechem, Martin; Hebisch, Siegbert; Schwenner, Eckhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hypertension and cardiac insufficiency can be controlled by 4-nitrophenyl-dihydropyridine amides of the formula, in which, X can be ethylene or the like Y is pyridyl or -NR9R10, and, R9 and R10 each independently is hydrogen or an organic group, or together form a ring and physiologically tolerated salts thereof. Compounds in which R5 and R6 are not aryl or aralkyl are new.
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 October 3, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 3, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2011.
- 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.