Phenyl piperazine derivatives having antiagressive activity
CA 1138461 A · Owner: Duphar International Research B.V. · Inventors: Hillen, Freddo C.; Haeck, Hans H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New phenyl piperazine derivatives of the formula and their salts, together with processes for their preparation are described. These compounds exhibit strong and selective, antiagressive activity, without exhibiting the sympatholytic activity found in other related known phenyl piperazine compounds.
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 December 28, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 1999.
- 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.