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Expired Canadian patentCanada

Anti-inflammatory 1-substituted-4,5-diaryl-2- (substituted-thio) imidazoles and their corresponding sulfoxides and sulfones

CA 1107286 A · Owner: E.I. Du Pont De Nemours And Company · Inventors: Sharpe, Thomas R.; Cherkofsky, Saul C.

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Abstract From the Canadian patent

Anti-inflammatory 1-substituted-4,5-diaryl-2-(substitutedthio) imidazoles and their corresponding sulfoxides and sulfones useful for treating arthritis and related disease are disclosed. The imidazoles are of the formula - R1, where n = 0, 1, or 2; R1 = C1 - C6 alkyl; allyl: vinyl; -CH2COCH3; -CH2S(O)mCH3, where m = 0, 1 or 2; mono- and poly-, halo- C1 - C4 alkyl; R2 and R3 the same or different =, Y1 and Y2, the same or different = hydrogen C1 - C4 alkoxy, C1 - C4 alkyl, Cl, F, CF3 NH2, -N(CH3)2, NO2, CH3S-, CH3SO2-, or Y1 and Y2 taken together forming a dioxymethylene bridge; provided, when R1 = C1 - C4 alkyl, C3 - C4 haloalkyl with halogen substituted at the 3 or 4 position allyl, or …

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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 August 18, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 1998.
  • 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 7, 1978
GrantedAugust 18, 1981
Term endedAugust 18, 1998
Patent numberCA 1107286 A
Classification (IPC)C07D405/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedFeb 7, 1978Patent grantedAug 18, 1981Term endedAug 18, 1998

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