2-amino-5-cyano-4- quinolyldihydropyridine esters, processes for their preparation and their use in medicaments
CA 2122000 A1 · Owner: Hebisch, Siegbert · Inventors: Straub, Alexander; Hebisch, Siegbert; Hutter, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2-Amino-5-cyano-4-quinolyldihydropyridine esters processes for their preparation and their use in medicaments, Abstract, The present invention relates to new 2-amino-5-cyano- 4-quinolyl-1,4-dihydropyridine esters of the general formula (I), (I), in which R1 to R3 have the meaning given in the description, to processes for their preparation and to their use in medicaments, especially in agents for the treatment of cardiac circulatory disorders.
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 April 22, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2016.
- 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.