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Expired Canadian patentCanada

Alkoxy derivatives of n-substituted cyclic amines and process for their preparation

CA 1078378 A · Owner: Hoechst Aktiengesellschaft · Inventors: Jensen, Harald; Mitzlaff, Michael; Warning, Klaus

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Abstract From the Canadian patent

Novel alkoxy derivatives of N-substituted cyclic amines of the formula, (I), where, R1 is hydrogen an alkyl group having from 1 to 8 carbon atoms an aryl group having from 6 to 10 carbon atoms an, alkoxy group having from 1 to 4 carbon atoms an aralkoxy, or aroxy group, R2 is a linear or branched alkylene group having from 1 to 4 carbon atoms in the chain, X is OR3, where R3 represents an alkyl group having from 1 to 4 carbon atoms, Y is hydrogen, (C1-C4)-alkyl (C1-C4)-O-alkyl, or in the, case where R1 is an alkoxy group having from 1 to 4 carbon atoms, Y is not H, and known alkoxy derivatives of the same formula (I) which differ from the novel alkoxy derivatives by the fact that R1 of …

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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 May 27, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 27, 1980
Term endedMay 27, 1997
Patent numberCA 1078378 A
Classification (IPC)C07D207/12 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMay 27, 1980Term endedMay 27, 1997

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.