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Expired Canadian patentCanada

Compositions comprising 1-substituted azacycloalkenes

CA 1293252 C · Owner: Whitby Research, Inc. · Inventors: Minaskanian, Gevork; Peck, James Vanolden

CIPO record

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Abstract From the Canadian patent

This invention provides compositions comprising a physiologically-active agent and an azacycloalkene having at least one double bond in the ring and of the general formula, wherein X and Y, each, may represent sulfur oxygen or, two hydrogen atoms, A is a straight or branched chain divalent aliphatic radical having from O to 2 double bonds; R' is selected from the group consisting of H a, lower alkyl group having 1-4 carbon atoms phenyl, lower, alkyl or halogen substituted phenyl acetamido, halogen, piperidinyl, lower alkyl or halogen substituted piperidinyl, carbalkoxy, carboxamide, and alkylformyli m is 3-7; q is 2m-2x, wherein x equals the number of double bonds in the lactam ring and may …

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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 December 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 22, 1987
GrantedDecember 17, 1991
Term endedDecember 17, 2008
Patent numberCA 1293252 C
Classification (IPC)C07D223/10 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 22, 1987Patent grantedDec 17, 1991Term endedDec 17, 2008

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