Esters of 0-(pyridyloxy-phenyl)-lactic acids
CA 1114382 A · Owner: Novartis Pharmaceuticals Canada Inc./Novartis Pharma Canada Inc. · Inventors: Bohner, Beat; 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 relates to novel esters of O-(pyridyloxy-phenyl)-lactic acids which have a herbicidal action and a plant-growth-regulating action which esters, correspond to the formula I, in whlch, "Hal" is a halogen atom, X is hydrogen or a halogen atom Y is an oxygen or sulfur atom, Z is a C1-C4-alkyl group which is unsubstituted or is substituted by methyl, ethyl, cyano, methylcarbonyl or by the group -COQ, and, Q is an -OH or SH group the salt of a carbonyl or, thiocarbonyl acid or an ester function, thioester, function or amide function.
Read the whole patent
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 December 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 1998.
- 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
Timeline From CIPO dates
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.