Novel antiarrhythmic compounds
CA 2313191 A1 · Owner: Cignarella, Giorgio · Inventors: Rettegi, Tivadar; Varro, Andras; Berzsenyi, Pal
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to compounds of formula (I) wherein R1 and R2, independently from each other mean hydrogen, halogen or C1-4 alkyl group; R3 R4 and R5, independently from each other stand for hydrogen or C1-4 alkyl , group; R6 represents hydrogen C1-4 alkyl or benzyl group; R7 means nitro group or amino group optionally monosubstituted by C1-4 alkyl benzoyl, C1-4 , alkylcarbonyl, C1-4 alkylsulfonyl C1-4 alkylcarbamoyl or C1-4 , alkylthiocarbamoyl group; both n and m are 0 or 1 with the proviso that R2 is , different from hydrogen when R1 is hydrogen, as well as stereoisomers or mixtures of stereoisomers thereof, acid addition salts thereof and hydrates prodrugs and metabolites of all …
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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, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 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.