Last Updated: September 24, 2026

Details for Patent: 3,663,696

Name: Drug Patent Intelligence for US Patent 3663696
Creator: DrugPatentWatch
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Summary for Patent: 3,663,696

Title:	Treatment of depression with 2-chloro-11 - (piperazinyl)dibenz - (b,f)(1,4)oxazepines and acid addition salts thereof
Abstract:	THE PREPARATION OF 2-CHLORO-11-(1-PIPERAZINYL)DIBENZ(B8F)(1,4)OXAZEPINE BY HEATING ETHYL 4-((O-(P-CHLOROPHENOXY) PHENYL)CARBAMOYL)-1-PIPERAZINE CARBOXYLATE WITH PHOSPHORUS PENTOXIDE AND PHOSPHORUS OXYCHLORIDE, IS DECRIBED. THE BASE COMPOUND AND PHARMACOTOGICALLY ACCEPTABLE ACID ADDITION SALTS ARE USEFUL FOR THEIR ANTIDEPRESSANT EFFECT ON THE CENTRAL NERVOUS SYSTEM OF WARMBLOODED ANIMALS.
Inventor(s):	Charles Frederick Howell, Robert Allis Hardy Jr, Nicanor Quinones Quinones
Assignee:	Wyeth Holdings LLC
Application Number:	US57307A
Patent Claim Types: see list of patent claims

Drugs Protected by US Patent 3,663,696

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