Nitric ester derivatives
CA 2381409 A1 · Owner: Nicox S.A. · Inventors: Del Soldato, Piero
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds or their salts of general formula (I): A-B-N(O)s wherein: s is an integer equal to 1 or 2; A = R-T1-, wherein R is the drug radical and T1 = (CO)t or (X)t', wherein X = O, S, NR1c R1c is H or a linear or branched alkyl or a free valence, t and t' are integers and equal to zero or 1 with the , proviso that t = 1 when t' = 0; t = 0 when t' = 1; B = -TB -X2-O- wherein TB = (CO) when t = 0, TB = X when t' = 0, X being as above defined; X2 bivalent , radical, is such that the precursor drug of A and the precursor of B meet respectively the pharmacological tests described in the description.
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 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2022.
- 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.