Herbicidal 1-aryl-.delta..sup.2-1,2,4-triazolin-5-ones
CA 1236463 A · Owner: Fmc Corporation · Inventors: Maravetz, Lester L.; Lyga, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
HERBICIDAL 1-ARYL-.DELTA.2-1,2,4-TRIAZOLIN-5-ONES Aryltriazolinones of the formula, in which W is oxygen or sulfur; X1 and X2 are independently selected from halogen, haloalkyl and alkyl; R is, a three- to eight-membered ring heterocyclic group of one or two, same or different, ring heteroatoms selected from oxygen, sulfur, and nitrogen, or an alkyl radical substituted with said heterocyclic group; R1 is alkyl halo-, alkyl, cyanoalkyl, alkenyl, alkynyl or a group of the, formula -alkyl-Y-R3; R2 is halogen alkyl, cyanoalkyl, haloalkyl, arylalkyl or a group of the formula -alkyl-, Y-R3; R3 is alkyl alkenyl, or alkynyl; and Y is oxygen, or S(O)r in which r is 0 to 2 are disclosed and …
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 May 10, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 10, 2005.
- 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.