Cyclic amino acid derivatives
CA 1094097 A · Owner: Warner-Lambert Company · Inventors: Herrmann, Manfred F.R.; Hartenstein, Johannes; Satzinger, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed compounds of the formula wherein R1 is hydrogen or methyl, R2 is lower alkyl of 1 to 8 carbon atoms or a cycloalkyl of from 3 to 8 carbon atoms or, benzyl, R3 is hydrogen or lower alkyl of 1 to 8 carbon atoms. These compounds exhibit hypothermal and in some cases, narcosis-potentiating or sedating properties.
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 January 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 20, 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.