Pyrimidinyl- or triazinyl-oxy(or thio)aldehyde derivatives and their use as herbicides or plant-growth regulators
CA 2125570 A1 · Owner: Hoechst Schering Agrevo Gmbh · Inventors: Bauer, Klaus; Zurmuhlen, Frank; Bieringer, Hermann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure: Pyrimidinyl- or triazinyl-oxy (or thio) aldehyde derivatives, processes for their preparation and their, use as herbicides or plant growth regulators It is known that pyrimidinyloxy(thio)- and triazinyloxy- (thio)-carboxylic acid derivatives have herbicidal and plant-growth-regulating properties. However some of the, prior art active substance with this type of structure have disadvantages in use, such as, for example insuf-, ficient selectivity in important crops. The invention relates to pyrimidinyloxy(thio) and triazinyloxy(thio) aldehyde derivatives of the formula I with advantageous herbicidal properties:, (I), in which, X Y, Z, A, Ra and Rb are defined as …
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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
- Filed November 25, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2014.
- 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.