Herbicidal sulfonamides
CA 1299568 C · Owner: E. I. Du Pont De Nemours And Company · Inventors: Wexler, Barry A.; Zimmerman, Donna F.; Hay, James V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title BA-8618B-1, HERBICIDAL SULFONAMIDES Abstract of the Disclosure, This invention relates to certain sulfonylurea compounds having substitutents ortho to the sulfonylurea linkage that include 3- or 4-membered carbocyclic rings saturated 5- or 6- membered carbocyclic rings hetero-, cyclic rings which contain 1 heteroatom selected from O, S, and NR3, alkenes, substituted alkenes cyclo-, alkenes, substituted cycloalkenes alkynes, and, substituted alkynes, agriculturally suitable compositions thereof and a method of their use as herbicides or plant growth regulants. More specifically, the compounds are of compounds are of the formula:, I, wherein L is , , L-1 L-2, , , L-3 L-4, , , L-5 L-6 …
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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 April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 2009.
- 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.