Herbicides
CA 2076240 A1 · Owner: Ciba-Geigy Ag · Inventors: Moser, Hans; Brunner, Hans-Georg; Pissiotas, Georg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PH/5-18761/A, Abstract, Novel herbicides: Benzothiazolone derivatives of formula I (I), wherein, Y is oxygen or sulfur;, R1 is hydrogen or fluorine; and R2 is hydrogen, C1-C6alkyl, C2-C4alkenyl or C2-C6alkynyl; halo-substituted C1-C6alkyl C2-C4alkenyl, or C3-C6alkynyl; C1-C4alkoxy-C1-C4alkyl C1-C4alkoxy-C1-C2alkoxy-, C1-C2alkyl, 1-phenylpropen-3-yl cyano- or C3-C6cycloalkyl-substituted C1-C6alkyl; carboxy-C1-C4alkyl, C1-C6alkoxycarbonyl-C1-C4alkyl halo-C1-C6alkoxycarbonyl-C1-C4-, alkyl C1-C4alkoxy-C1-C2alkoxycarbonyl-C1-C4alkyl C1-C6alkoxycarbonyl-C1-C2alkoxy-, carbonyl-C1-C4alkyl C3-C6cycloalkyl-C1-C2alkoxycarbonyl-C1-C4alkyl C1-C5alkyl-aminocarbonyl-C1-C4alkyl, …
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 August 17, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2014.
- 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.