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Expired Canadian patentCanada

Herbicidal 5-pyrimidylcyclohexan-1,3, dione derivatives

CA 1251207 A · Owner: Ici Australia Limited · Inventors: Farquharson, Graeme J.; Watson, Keith G.

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Abstract From the Canadian patent

Herbicidal 5-pyrimidylcyclohexan-1,3,dione derivatives The invention concerns novel compounds of the formula I, I, wherein:, X are selected from halogen nitro, cyano, alkyl, substituted alkyl hydroxy, alkoxy, substituted alkoxy, alkeny1 alkenyloxy, alynyl, alkynyloxy, acyloxy alkoxycarbonyl, alkylthio, alkylsulfinyl alkylsulfonyl, sulfamoyl, substituted sulfamoyl alkanoyloxy, benzyl-, oxy, substituted benzyloxy amino, substituted amino, and the groups formyl and alkanoyl and the oxime imine, and Schiff base derivatives thereof; R1 is selected from hydrogen, alkyl, alkenyl alkynyl, substituted alkyl, alkylsulfonyl arylsulfonyl, acyl, and an inorganic or organic cation; R2 is selected from …

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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 March 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 14, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 1, 1983
GrantedMarch 14, 1989
Term endedMarch 14, 2006
Patent numberCA 1251207 A
Classification (IPC)C07D239/24 +2 more

Timeline

Timeline From CIPO dates

19841987199019931996199920022005Application filedSep 1, 1983Patent grantedMarch 14, 1989Term endedMarch 14, 2006

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