Pyridine derivatives, their production and use
CA 1096383 A · Owner: Celamerck G.M.B.H. & Co. Kg · Inventors: Thomas, Klaus, (Deceased); Linden, Gerbert; Schroder, Ludwig
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to novel 2-chloro-3,5diiodopyridine derivatives and to processes for their preparation, The novel compounds possess herblcidal activity and are effective via leaf or soil treatment. The invention thus also relates to herbicidally compositions comprising the novel compounds as active ingredient as well as to the methods for controlling undesired vegetation using the novel compounds. The compositions of the present invention possess a marked herbicidal activity and in high concentrations serve as total herbicides. In lower concentrations, however, the compositions are of use in the selective control of broad-leaf weeds in the presence of crop plants. Processes for the …
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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 February 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 24, 1998.
- 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.