Phenylpyrazolecarboxylic acid derivatives, their preparation, and their use as plant-growth regulators and safeners
CA 1340468 C · Owner: Burstell, Helmut · Inventors: Handte, Reinhard; Burstell, Helmut; Bauer, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula I, (see fig. I) in which R denotes halogen, hydroxyl, cyano nitro, (substituted) alkyl, (substituted) alkoxy (halo)alkylthio, carboxyl, alkoxycarbonyl; (halo)alkylsulf(inyl)(onyl) or -(onyloxy); (halo)phenyl or (halo)phenoxy; X in the 3- or 5-position denotes a (thio)carboxylic acid - or an optionally heterocyclic radical which is derived therefrom; Y denotes halogen, m denotes the number 0 or 1 and n denotes a number from 0 to 5, have valuable plant growth-regulating properties and are suitable in, addition, as safeners for protecting crop plants against phytotoxic side effects of herbicides.
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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.
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.