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Expired Canadian patentCanada

Imidazo1,2-aquinoline derivatives, their preparation and their application in therapy

CA 1286668 C · Owner: De Peretti, Daniele · Inventors: De Peretti, Daniele; George, Pascal

CIPO record

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Abstract From the Canadian patent

IMIDAZO1,2-aQUINOLINE DERIVATIVES THEIR PREPARATION AND, THEIR APPLICATION IN THERAPY Compounds of formula (I), (I), in which X denotes hydrogen or a halogen or a (C1-4)alkyl (C1-4)-, alkoxy, (C1-4)alkylthio, methylsulphonyl amino, (C1-4)-, alkylamino, di(C1-4)alkylamino nitro or trifluoroalkyl, group, Y denotes hydrogen or a halogen or a methyl group and is attached for the aryl ring at position 6 7 or 8, and, R1 and R2, which may be identical or different each denote, hydrogen or a (C1-6)alkyl group or R1 and R2 together form, a tetramethylene pentamethylene, 3-methyl-3-, azapentamethylene or 3-oxapentamethylene divalent group and, their pharmaceutically acceptable salts are useful in, …

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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 July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 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.
FiledJanuary 21, 1987
GrantedJuly 23, 1991
Term endedJuly 23, 2008
Patent numberCA 1286668 C
Classification (IPC)C07D471/04

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJan 21, 1987Patent grantedJuly 23, 1991Term endedJuly 23, 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.