O, o-di-alkyl-o(1-6-pyridazinon-3-yl)-(thiono)-phosphoric acid esters
CA 1071206 A · Owner: Bayer Aktiengesellschaft · Inventors: Hammann, Ingeborg; Behrenz, Wolfgang; Maurer, Fritz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
0,0-Di-alkyl-0-(1-6-pyridazinon-3-yl)-(thiono)phosphoric acid esters of the formula, (I) in which, R is methyl or ethyl, R1 is alkyl with 3 to 5 carbon atoms or alkoxyalkyl with 1 to 3 carbon atoms in each alkoxy and alkyl moiety, R2 is hydrogen nitro, halogen or alkyl with, 1 to 6 carbon atoms and, X is oxygen or sulfur, which possess insectididal and acaricidal properties.
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
- Granted February 5, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 5, 1997.
- 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.