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Expired Canadian patentCanada

1-substituted, 2-substituted 1h-imidazo-4,5-cquinolin-4- amines

CA 2104782 C · Owner: Medicis Pharmaceutical Corporation · Inventors: Gerster, John F.; Crooks, Stephen L.; Lindstrom, Kyle J.

CIPO record

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Abstract From the Canadian patent

1-substituted, 2-substituted 1H-imidazo 4,5-c-quinolin-4-amines of formula (1), where X is selected from the group consisting of alkoxy, alkoxyalkyl, haloalkyl hydroxyalkyl, alkylamido, amino, substituted amino or hydroxy-alkyl wherein the substituent is alkyl, azido, chloro, hydroxy 1-morpholino, 1-pyrrolidino, and , alkylthio. These compounds function as antiviral agents, they induce biosynthesis of interferon and they inhibit tumor , formation in animal models. This invention also provides intermediates for preparing such compounds pharmaceutical compositions , containing such compounds and pharmacological, methods of using such compounds.

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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

  • Filed February 20, 1992 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 20, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 20, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 20, 1992
GrantedAugust 7, 2001
Term endedFebruary 20, 2012
Patent numberCA 2104782 C
Classification (IPC)C07D471/04 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedFeb 20, 1992Patent grantedAug 7, 2001Term endedFeb 20, 2012

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