Herbicide combinations comprising specific sulfonylureas
CA 2454488 A1 · Owner: Bieringer, Hermann · Inventors: Hacker, Erwin; Bieringer, Hermann; Huff, Hans Philipp
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to herbicide combinations containing components (A) and (B), which exhibit an improved herbicidal action. According to the invention: (A) is one or more herbicides of formula (I) or the salts thereof in which R1 , represents a (C1-C8) alkyl (C3-C4) alkenyl, (C3-C4) alkinyl or (C1-C4) alkyl which is monosubstituted to tetrasubstituted by radicals from the group containing halogen and/or (C1-C2) alkoxy R2 represents I or CH2NHSO2CH3, R3 , represents methyl or methoxy and Z represents N or CH; and (B) is one or more herbicides, which are selectively effective in several monocotylic cultures against monocotylic and/or dicotylic harmful plants from the group of …
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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 July 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 2024.
- 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
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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.