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Expired Canadian patentCanada

Benzoylphenylureas, the preparation thereof and the use thereof in pest control

CA 1340467 C · Owner: Ciba-Geigy Ag · Inventors: Drabek, Jozef

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Abstract From the Canadian patent

The invention relates to novel substituted N-benzoyl-N'-2,5-dihalo-4-haloalkoxyphenylureas of formula I (see fig. I), wherein each of R1 and R2 is halogen with the proviso that R1, and R2 may not simultaneously be chlorine R3 is a mono- or, polyhalogenated C1-C7alkyl group with the exclusion of perfluorinated C1-C7alkyl, R4 is hydrogen halogen, methyl, methoxy or methylthio and R5 is halogen methyl, methoxy or, methylthio, to processes and intermediates for the preparation thereof, to the use thereof in pest control and to compositions containing, as active ingredient, at least one compound of formula I. The preferred area of application of said novel compounds is the control of pests of …

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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 30, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2016.
  • 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 26, 1987
GrantedMarch 30, 1999
Term endedMarch 30, 2016
Patent numberCA 1340467 C
Classification (IPC)C07C275/54 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006200920122015Application filedFeb 26, 1987Patent grantedMarch 30, 1999Term endedMarch 30, 2016

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