Derivatives of 5-(pyridyl-2'-nitrobenzoic acid, processes for their production, and herbicidal compositions containing them
CA 1202033 A · Owner: Novartis Pharma Canada Inc./Novartis Pharma Canada Inc. · Inventors: Rempfler, Hermann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Derivatives of 5-(pyridyl-2'-oxy)-2-nitrobenzoic acid processes for their production, and herbicidal compositions containing them, Abstract of the Disclosure The invention relates to 5-(pyridyl-2'-oxy)-2nitrobenzoic acid derivatives of the formula wherein A is the cyano group, the carboxyl group or a salt an ester, a thioester or an amide thereof X is halogen, or a halomethyl group, Y is hydrogen halogen or a, halomethyl group. These compounds have herbicidal properties and are suitable for selectively controlling weeds in crops of useful plants, especially in soybeans cereals and rice crops.
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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 March 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 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.