Antiarrhythmic agents
CA 1310646 C · Owner: Dickinson, Roger Peter · Inventors: Cross, Peter Edward; Dickinson, Roger Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title: Antiarrhythmic Agents A cardiac antiarrhythmic agent of the formula:- --- (I), or a pharmaceutically-acceptable salt thereof; wherein R is R3SO2NH-, R3CONH- or R1R2NSO2-; R1 and R2 are each independently H or C1-C4 alkyl; R3 is C1-C4 alkyl, C3-C7 cycloalkyl or -NR1R2 where R1 and R2 are as defined above;, and Het is either (a) a 2- 3- or 4-pyridyl group optionally, substituted by a C1-C4 alkyl or an amino group or (b) a, 2-imidazolyl group optionally substituted by one or two C1-C4 alkyl groups. PLC 449
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
- Granted November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 2009.
- 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.