Imidazodiazepines
CA 1184176 A · Owner: Hoffmann-La Roche Limited · Inventors: Hunkeler, Walter; Kyburz, Emilio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The novel imidazodiazepines of the general formula, I, wherein A together with the two carbon atoms denoted as .alpha. and .beta. signifies the group (a) or (b), X signifies an oxygen or sulphur atom and R1 signifies hydrogen or lower alkyl and either R2 signifies hydrogen, trifluoromethyl halogen, cyano or, nitro and R3 signifies hydrogen or R2 signifies hydrogen and R3 signifies trifluoromethyl, halogen, cyano, nitro or lower alkyl, and their pharmaceutically acceptable acid addition salts are useful in the antagonization of the central-depressant muscle relaxant, ataxic, blood pressure-lowering and respiratory-depressant properties of 1,4-benzodiazepines which have tranquillizing …
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 March 19, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2002.
- 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.