Novel 1-aryl-4-thiouracils
CA 2349386 A1 · Owner: Basf Aktiengesellschaft · Inventors: Menke, Olaf; Schafer, Peter; Zagar, Cyrill
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 1-aryl-4-thiouracils of formula (I) to their , salts/enolethers used as herbicides whereby R1 = H, NH2, C1-C6-alkyl; R2 = H halogen, C1-C4-alkyl, C1-C4-alkyl halide; R3 = H halogen, C1-C6-alkyl, methyl , halide; R4 = H halogen; R5 = CN, halogen, -CO-NH2, -CS-NH2 -OC(R8,R9)-CO-, O(C1-C6-alkyl); Y = N, CH or together with R6, a bridge ~C-O-C(R10)=N-; R6 together with R5, = a radical -N(R7)-C(O/S)-C(R8',R9')-O- bound to R5 via the oxygen, or 1) H, OH, SH, CN, NO2, halogen C1-C6-alkyl, C1-C6-alkyl halide, C1-, C6-alkoxy halide C1-C6-alkylthio halide, C1-C6-alkylthio-(C1-C6alkyl)carbonyl, (C1-C6-alkyl)imino-oxycarbonyl C1-C6-alkoxy-C1-C6-alkyl, C1-, …
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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
- Filed October 29, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2021.
- 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.