Tetrazolinones
CA 2210447 A1 · Owner: Nihon Bayer Agrochem K.K. · Inventors: Yamaoka, Tatsuya; Minegishi, Natsuko; Goto, Toshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel compounds and mixtures of geometrical isomers, which are represented by the formula: (I), wherein, R1 and R2 independently of one another are C1-6 alkyl C1-6 haloalkyl, C3-8, cycloalkyl, C2-6 alkenyl C2-6 haloalkenyl, C3-6 alkynyl or optionally substituted phenyl; or R1 and R2, together with the nitrogen atom to which they are bonded, form a 5-membered or 6-membered heterocyclic ring which may be benzo-fused or which may be substituted by halogen or C1-4 alkyl; R3 is hydrogen or C1-6 alkyl; R4 is hydrogen or C1-6 alkyl; or R3 and R4, together with the carbon atoms to which they are bonded form, cyclopentylidene or cyclohexylidene; and R5 is C1-6 alkyl …
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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 July 15, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 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.