N-sulphenylated benzenesulphonic acid amide fungicides
CA 1291162 C · Owner: Bayer Aktiengesellschaft · Inventors: Schmitt, Hans-Georg; Brandes, Wilhelm; Kuhle, Engelbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Fungicidally active novel N-sulphenylated benzene sulphonic acid amides of the formula, in which R1, R2 and R3 independently of one another represent hydrogen, halogen, nitro, alkyl or halogenoalkyl and, R4 represents alkyl alkenyl, halogenoalkinyl, cycloalky which is optionally substituted by alkyl, alkoxyalkyl or alkylthioalkyl, excluding the compounds in which (a) R4 represents methyl and (i) R2, R2 and R3 represents hydrogen or (ii) R1 represents chlorine or nitro R2 represents, chlorine and R3 represents hydrogen or (iii) R1, represents nitro and R2 and R3 represent hydrogen or (iv) R1 and R3 represent chlorine and R2 represents hydrogen and (b) R4 represents n-butyl R1 and, …
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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
- Granted October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.