2-4-(6-haloquinoxalinyl-2-oxy)phenoxypropionic acid esters, production thereof and use thereof as herbicides and plant growth regulators
CA 1187081 A · Owner: Novartis Pharmaceuticals Canada Inc./Novartis Pharma Canada Inc. · Inventors: Bohner, Beat; Rempfler, Hermann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to novel 2-4-(6-haloquinoxalinyl- 2-oxy)phenoxypropionates with herbicidal and plant growth regulating properties and having good selectivity in different crops of cultivated plants. The novel compounds have the general formula I, (I), wherein X is fluorine, chlorine or bromine Z is oxygen or sulfur, A is a C1-C4alkylene bridge which is unsubstituted or substituted by methyl or ethyl, and R is C1-C4alkyl with the proviso that, the group -Z-A-COOR is other than -O-CH(CH3)-COOC2H5.
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 May 14, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 14, 2002.
- 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.