Herbicidal esters
CA 1287352 C · Owner: Ciba-Geigy Ag · Inventors: Moser, Hans; Pissiotas, Georg; Bohner, Beat
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herbicidal esters, Abstract of the Disclosure Novel 5-(N-3,4,5,6-tetrahydrophthalimido)benzoic acid esters of formula I below have good selective herbicidal properties pre- and postemergence and also influence or inhibit plant growth. The novel compounds are of formula I (I), wherein, n is 0, 1 or 2, R is C1-C3alkyl R1 is hydrogen or halogen, R2 is halogen X is oxygen or sulfur, A is a straight chain or branched C1-C4alkylene bridge Q is a 5- or 6-membered heterocycle which is bound through carbon or nitrogen and contains 1 to 3 hetero atoms and may further contain one or two carbonyl groups, which heterocycle may be fused to benzene rings and substituted by halogen C1-C4alkyl, …
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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 August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 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.