Piperazine derivatives, acid addition salts thereof, processes for their production, and pharmaceutical compositions containing the same
CA 1065318 A · Owner: Kali-Chemie Aktiengesellschaft · Inventors: Von Eickstedt, Klaus-Wolf; Zeugner, Horst; Stuhmer, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Piperazine derivatives,and processes for their preparation of the general formula, are described, together with acid addition compounds in which 'alkyl', is a lower alkyl, and R is halogen or lower alkyl. These compounds have sedative properties combined with analgesic and antihistaminic activity.
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 October 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 30, 1996.
- 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.