Azole derivative herbicides and fungicides
CA 2124940 A1 · Owner: Agrevo Uk Limited · Inventors: Buhmann, Ulrich; Briggs, Geoffrey Gower; West, Peter John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herbicidal compounds of formula (I) where: Az is imidazol-1-yl or 1,2,4-triazol-1-yl; each X represents halogen carboxy, nitro, cyano, a group COR5, COOR5 or S(O)pR5 or an optionally, substituted alkyl, alkoxy aryl or heteroaryl group; or two, adjacent groups X together form a fused benzo group; R1 represents a group CN, COR5, COOR5, or S(O)pR5; R2 represents a group CN, COR5, COOR5, S(O)pR5, SO2N(R5)2, P(O)(OR5)2 nitro, aryl, heteroaryl or aralkyl; R3 and R4 which may, be the same or different, each represent hydrogen or an, optionally substituted alkyl, aryl or heteroaryl group; R5 represents an optionally substituted alkyl, alkenyl, alkynyl cycloalkyl, aryl, or heteroaryl group; or …
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 November 5, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 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.