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Expired Canadian patentCanada

3,3-disubstituted indolines

CA 1301151 C · Owner: E.I. Du Pont De Nemours And Company · Inventors: Nickolson, Victor Johannes; Myers, Melvyn John

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Abstract From the Canadian patent

Title BP-6303-A, 3,3-DISUBSTITUTED INDOLINES Abstract of the Disclosure, Cognitive deficiencies and/or neurological function deficits and/or mood and/or mental disturbances are treated by the administration of 3,3-disubtituted indolines. The indolines have the formula: ( I ), wherein:, p is O or 1:, Z is O or S; R is Cl-C10 alkyl, C3-C8 cycloalkyl, 2-pyridyl 3-pyridyl, 4-pyridyl or, V, W, X, and Y independently are H halo. Cl-C3, alkyl, OR1, N02, CF3, CN or NR1R2; Rl and R2 independently are H or Cl-C3 alkyl; - ? and - ? independently are 6-membered heterocyclic aromatic rings containing at least one nitrogen atom as a part of the ring optionally substituted with one, substituent selected …

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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 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
  • 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 7, 1987
GrantedMay 19, 1992
Term endedMay 19, 2009
Patent numberCA 1301151 C
Classification (IPC)C07D401/14 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 7, 1987Patent grantedMay 19, 1992Term endedMay 19, 2009

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