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Expired Canadian patentCanada

Phenoxyalkyl-substituted heteroaromatics and a method for controlling pests

CA 1338938 C · Owner: Basf Aktiengesellschaft · Inventors: Leyendecker, Joachim; Hofmeister, Peter; Krieg, Wolfgang

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Abstract From the Canadian patent

Phenoxyalkyl-substituted heteroaromatics of the formulae Ia and Ib, (Ia), (Ib), where the substituents have the following meanings: R1 C1-C12-alkyl, C2-C12-alkenyl, C2-C12-alkynyl C1-C12-haloalkyl, C2-C12-haloalkenyl, C2-C12-haloalkynyl C3-C12-alkoxyalkyl, C3-C8-cycloalkyl, C4-C12-cycloalkylalkyl C3-C8-halocycloalkyl, C4-C12-halocycloalkylalkyl C4-C12-cycloalkylhaloalkyl or, C4-C12-halocycloalkylhaloalkyl; Z hydrogen, halogen, C1-C8-alkyl, C1-C8-alkoxy C1-C4-haloalkyl, C1-C4-haloalkoxy, C3-C10-cycloalkyl nitro or cyano in the case of Ia, and hydrogen halogen, or C1-C4-alkyl in the case of Ib; X O, S, SO2;, Qa substituted or unsubstituted azole; Qb substituted or unsubstituted …

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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 February 25, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 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.
FiledJuly 14, 1989
GrantedFebruary 25, 1997
Term endedFebruary 25, 2014
Patent numberCA 1338938 C
Classification (IPC)C07D231/00 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedJuly 14, 1989Patent grantedFeb 25, 1997Term endedFeb 25, 2014

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