Herbicidal benzoylisothiazoles
CA 2251662 A1 · Owner: Misslitz, Ulf · Inventors: Vossen, Marcus; Otten, Martina; Kardorff, Uwe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
4-benzoylisothiazoles have general formula (1) in which the substituents have , the following meanings: X stands for oxygen or sulphur; R1 stands for hydrogen, alkyl, alkenyl, alkinyl, or for optionally substituted alkoxycarbonyl, aryl, heterocyclyl or hetaryl; R2 stands for hydrogen alkyl, alkenyl, alkinyl, cycloalkyl or cycloalkenyl whereas these radicals may bear , one or several halogen alkyl, alkenyl or alkinyl groups, or R2 stands for aryl, hetaryl or heterocyclyl; and R3 stands for alkyl cycloalkyl or a , radical of general formula (2) in which the substituents have the meanings indicated in claim 1. Also disclosed are the salts commonly used in agriculture of the …
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
- Filed April 14, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2019.
- 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.