Substituted 3-aminosydnone imines, process for the preparation therefore and the use thereof
CA 2060030 A1 · Owner: Bohn, Helmut · Inventors: Just, Melitta; Binder, Rudolf; Bohn, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel 3-aminosydnone imines of the general formula (I), and the pharmacologically acceptable acid addition salts thereof in which R1 is a C1-C6 alkyl, R2 is hydrogen or the radical -COR3, in which R3 is, for example, a C1-C4-alkyl. The compounds of formula I and their acid addition salts have valuable pharmacological properties. They have a particularly pronounced action on the cardiovascular system and, compared with known similar compounds, have a considerably longer duration of action. They are useful for controlling and preventing cardiovascular diseases.
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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 January 24, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2014.
- 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.