Specifically substituted cyclopropanecarboxamides and their use for controlling pests
CA 2002169 C · Owner: Buerstinghaus, Rainer · Inventors: Neubauer, Hans-Juergen; Leyendecker, Joachim; Krieg, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cyclopropanecarboxamides of the general formula I, (see fig. I), where R1 is C1-C4-alkyl fluorine, chlorine, bromine, C1-C3-haloalkyl or C1-C3-haloalkoxy, R2 is hydrogen, fluorine chlorine or bromine, with the, proviso that R1 is not fluorine if R2 is H and pesticides containing, these compounds.
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 November 3, 1989 and granted August 3, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 3, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 2011.
- 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.