Substituted n-hydroxypyrazoles and n-hydroxytriazoles for controlling pests
CA 2010715 C · Owner: Leyendecker, Joachim · Inventors: Hofmeister, Peter; Kirstgen, Reinhard; Leyendecker, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel substituted N-hydroxypyrazoles or N-hydroxytriazoles of the general formula I (see fig. I), where X and Y are O, S, SO SO2 or CH2, B is N-pyrazolyl or, N-1,2,4-triazolyl of the formulae Ba and Bb respectively (see fig. II) (see fig. III), R1 and R2 are hydrogen or C1-C3-alkyl R3 is hydrogen, halogen or, C1-C3-alkyl z is 1, 2 or 3, R4, R5 and R6 are hydrogen halogen, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-haloalkyl or C1-C4-haloalkoxy and n is 0, 1 or 2, and, methods of combating pests.
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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 22, 1990 and granted July 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.