Cyclophanes, pharmaceutical compositions containing these compounds and processes for preparing them
CA 2039466 A1 · Owner: Trach, Volker · Inventors: Psiorz, Manfred; Trach, Volker
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to cyclophanes of general formula, (I), wherein, X1, X2, A, R and R1 to R4 are defined as in claim 1 the, enantiomers, diastereomers and addition salts thereof and, more particularly, for pharmaceutical use the, physiologically acceptable addition salts thereof which, have valuable properties, especially valuable pharmacological properties such as the effect of lowering blood pressure and dilating the coronary blood vessels and a mild heart rate lowering activity pharmaceutical compositions which contain these compounds and processes for preparing them.
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 March 28, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 2013.
- 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.