Substituted pyridines/pyrimidines, process for the preparation thereof and use thereof as pesticides
CA 2250836 A1 · Owner: Hoechst Schering Agrevo Gmbh · Inventors: Schaper, Wolfgang; Kern, Manfred; Knauf, Werner
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 substituted pyridines/ pyrimidines of the general formula (I), A being CH or N, X being NH oxygen or S(O)q where q is , 0, 1 or 2 Y being a direct bond or CH2, Z being oxygen NR7 or S(O)m where m , is 0, 1 or 2, and the symbols R1 R2, R3, R4, R5, R6 and R7 have the meaning given in the description. It also relates to a process for the preparation of said substituted pyridines/ pyrimidines and the use thereof as pesticides fungicides, ovicides or as veterinary medicine.
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
- Filed March 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2019.
- 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.