Benzyl enol ethers and their use as crop protection agents
CA 2094359 A1 · Owner: Sauter, Hubert · Inventors: Lorenz, Gisela; Wingert, Horst; Benoit, Remy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
O.Z. 0050/43197, Novel benzyl enol ethers and their use as crop protection agents, ABSTRACT OF THE DISCLOSURE:, Benzyl enol ether derivatives of the general formula I I, where, A, is CH2, CHC1, CH-alkyl, CH-O-alkyl CH-S-alkyl or N-O-alkyl, B, is OH, alkoxy alkylthio and alkylamino, U, V and W, are identical or different and each is hydrogen halogen, alkyl or alkoxy, R1, R2 and R3 are identical or different and each is hydrogen cyano, ha-, logen, amino, ester, amide acyl, S(O)nR4, PO(OR4)2, alkyl, haloalkyl cycloalkyl, halocycloalkyl, cycloalkyl-alkyl al-, koxy-alkyl, alkylthio-alkyl, arylthio alkyl alkenyl, halo-, alkenyl, cycloalkenyl, halocycloalkenyl alkynyl, alkoxy, haloalkoxy, …
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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 April 19, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2015.
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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.