Benzo¬4,5 cyclohepta ¬1,2,3-de pyrido ¬2, 1-a - isoquinoline derivatives having minor tranquilizer activity
CA 1108145 A · Owner: Ayerst, Mckenna & Harrison Inc. · Inventors: Philipp, Adolf H.; Humber, Leslie G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
AHP-7266, BENZO4,5CYCLOHEPTA1,2,3-dePYRIDO2,1-aISOQUINOLINE DERIVATIVES HAVING MINOR TRANQUILIZER ACTIVITY ABSTRACT OF THE DISCLOSURE, 2,3,4,4a,12,13,13a,14-Octahydro-1H-benzo4,5cyclohepta1,2,3,depyrido2,1-aisoquinoline and derivatives of 1,2,4,4a,12,13,13a,14-octahydro-3Hbenzo4,5cyclohepta1,2,3-depyrido2,1-aisoquinolin-3-o1 substituted on position 3 with a lower alkyl group are disclosed. The compounds are useful minor tranquilizers. Methods for their preparation are disclosed also. -1-
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 September 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 1998.
- 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.