New derivatives of 10,11-dihydro-10-oxo-5h-dibenz/b,f/azepine-5-carboxamide
CA 2206172 C · Owner: Da Silva, Patricio Manuel Vieira Araujo Soares · Inventors: Benes, Jan; Da Silva, Patricio Manuel Vieira Araujo Soares; Learmonth, David Alexander
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of general formula I are described (see fig. I), as is a process for their preparation which consists of reacting a compound of formula II, (see fig. II), with hydroxylamine or its derivatives of formula III H2NOR2 (III), The compounds cited in the present invention have valuable pharmaceutical properties namely in the treatment of some disturbances in the central and peripheral nervous system.
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
- Filed May 27, 1997 and granted July 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2019.
- 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.