Substituted carbamoyl triazoles and their use as herbicides
CA 2264708 A1 · Owner: Walter, Helmut · Inventors: Hamprecht, Gerhard; Misslitz, Ulf; Baumann, Ernst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substituted carbamoyl triazoles have the formula (I) in which the variables , have the following meanings: R1 is hydrogen C1-C6 alkyl, C1-C6 alkyl halide, C3-C8 cycloalkyl C3-C6 alkenyl or C3-C6 alkinyl; R2 is R1 C1-C6 alkoxy or C1-, C6 alkoxy halide; or R1 and R2 form together an optionally substituted C2-C5 alcandiyl radical, and if they form a C4-C5 alcandiyl radical one CH2 group may be substituted by oxygen or a group NH or N-C1-C6 alkyl; R3 R4 and R5 are , hydrogen, cyano, C1-C6 alkyl C1-C6 alkyl halide, C3-C6-cycloalkyl, C2-C6 alkenyl, C2-C6 alkinyl, C1-C6 alkoxy, C1-C6 alkoxy halide C1-C6 alkylthio, C1-, C6 alkyl carbonyl C1-C6 alkyl halide carbonyl, C1-C6 alkoxycarbonyl …
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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 September 9, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 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.