1o-substituted 5-cyanomethylene-dibenzo a,d - cycloheptenes, their preparation, and therapeutic agents containing these compounds
CA 1163265 A · Owner: Basf Aktiengesellschaft · Inventors: Hofmann, Hans P.; Steiner, Gerd; Lenke, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
O.Z.0050/034339, Abstract of the Disclosure: 10-Substituted 5-cyano methylene-dibenzoa,d-cycloheptenes, their pure cisand trans-isomers, their N-oxides and their pharmaceutically tolerated addition salts with acids pro-, cesses for their preparation, therapeutic agents containing these compounds and their use as drugs espe-, cially as sedatives, hypnotics or tranquilizers.
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 6, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 2001.
- 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.