Sulfonylureas having heterocyclic substituents, a process for their preparation and their use in agriculture
CA 1210004 A · Owner: Hoechst Aktiengesellschaft · Inventors: Mildenberger, Hilmar; Burstell, Helmut; Willms, Lothar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula (I), wherein R1 is (among others) (halo)cycloalkyl or (halo) cycloalkenyl, R2 and R3 are preferably hydrogen X is, preferably oxygen and R4 is substituted pyrimidyl or s-triazinyl, are valuable herbicides and growth regulators.
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
- Granted August 19, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2003.
- 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.