Pyridine derivatives, process for making them, agents containing them and their use as fungicides
CA 2068338 A1 · Owner: Hoechst Aktiengesellschaft · Inventors: Sachse, Burkhard; Giencke, Wolfgang; Wicke, Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure Pyridine derivatives, process for their preparation agents containing them and their use as fungicides Compounds of the formula I, (I), in which R1, R2, R3 and R4 are independently of one another hydrogen, halogen, nitro, cyano sic, alkyl alkoxy, alkylthio, haloalkoxy or haloalkyl R5, R6 and R7 are independently of one another hydrogen alkyl or phenyl, which can be substituted R8 and R9 are independently of one another hydrogen alkyl, cycloalkyl, cycloalkylalkyl, it being possible for the two last-mentioned radicals to be substituted by alkyl, haloalkyl, alkoxy alkylthio, alkoxyalkyl, alkylthioalkyl halogen, alkenyl, alkynyl, phenyl, phenoxy phenoxyalkyl, …
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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 November 7, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2012.
- 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.