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Expired Canadian patentCanada

1,2,4-oxadiazolyl derivatives of imidazo-: benzazepine, benzodiazepine, benzoxazepine and benzothiazepine

CA 1293723 C · Owner: Ferrosan Holding A/S · Inventors: Watjen, Frank; Engelstoft, Mogens

CIPO record

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Abstract From the Canadian patent

New heterocyclic derivatives having the general formula: wherein, X is , or CO2R ', wherein R' is C1-6-alkyl C3-7-cycloalkyl, or C1-3-alkoxy-, methyl and, - A - is -(CH2)n-Y-(CH2)m-, wherein n and m are 0 or 1 and -Y- is -O- -S-, -CH2-, or, -NR''-, wherein R'' is hydrogen or C1-6-alkyl. The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics and nootropics, and in human and animal health as anthelmintics ecto- and, endoparasiticides, insecticides and acaricides.

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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 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 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.
FiledOctober 1, 1986
GrantedDecember 31, 1991
Term endedDecember 31, 2008
Patent numberCA 1293723 C
Classification (IPC)C07D487/04 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedOct 1, 1986Patent grantedDec 31, 1991Term endedDec 31, 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.