Expired Canadian patentCanada
Amino acid derivative anticonvulsant
CA 1340904 C · Owner: Research Corporation Technologies, Inc. · Inventors: Kohn, Harold L.; Watson, Darrell
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel compounds of the formula:, (see above formula) useful in the treatment of epilepsy and other CNS disorders.
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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 February 22, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 22, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 7, 1987
GrantedFebruary 22, 2000
Term endedFebruary 22, 2017
Patent numberCA 1340904 C
Classification (IPC)C07C237/22 +2 more
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.