Pyridyloxy-phenoxy-alkanecarboxylic acid derivatives which are effective as herbicides and as agents regulating plant growth
CA 1100973 A · Owner: Ciba-Geigy Investments Ltd. · Inventors: Rempfler, Hermann; Schurter, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention concerns new pyridyloxy-phenoxyalkanecarboxylic acid derivatives of the formula wherein A is hydrogen, halogen, alkyl, alkoxy cyano, nitro or carbothiamide, B is hydrogen halogen, alkyl, cyano, mono- or, dialkylamino alkoxy-carbonyl or carbothiamide, C is hydrogen halogen, cyano, nitro or carbothiamide D is hydrogen, halogen, alkyl, mono- or dialkylamino - 1 -, R1 is hydrogen, alkyl, alkoxyalkyl or benzyl R is the rest of the acid a salt or an ester with the proviso that if the pyridine ring is substituted by halogen and/or alkyl and C is also halogen, then the radicals A, B and D must contain no less than two halogen atoms or alkyl radicals. These derivatives have …
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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 May 12, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 1998.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.