Piperidylidene derivatives of benzo-fused xanthenes, thioxanthenes and dibenzoxepins
CA 1102807 A · Owner: Smith Kline & French Canada Ltd. · Inventors: Kaiser, Carl; Lafferty, John J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
K??ER-LAFFERTY CASE 2A, ABSTRACT, Novel piperidylidene derivatives of benzo-fused xanthenes thioxanthenes and dibenzoxepins administered internally to an animal host, in therapeutically effective amounts produce antipsychotic, activity essentially free of extrapyramidal symptoms.
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 June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 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.