Organic nitrile derivatives and their use as pesticides
CA 2316835 A1 · Owner: Trah, Stephan · Inventors: Huter, Ottmar Franz; Pascual, Alfons; Kriz, Miroslav
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I), wherein: A1 and A2 each represent independently of one other an aryl or a heteroaryl radical; and A1 where appropriate is substituted with substituent (R3a)n1 and A2 where appropriate with substituent (R3b)n2; n1 and n2 are independently of one another 0 1, 2, 3 or 4; and , <u>either</u> R3a and R3b independently of one another are for example halogen, C1-C6alkyl, C2-C4alkinyl, halogen-C1-C6alkyl halogen-C2-C4alkinyl, C1-C6alkoxy, halogen-C1-C6alkoxy C2-C6alkenyloxy, C2-C6alkinyloxy or halogen- C2-C6alkenyloxy; and R2 is R2a; R2a is for example -C1-C6alkyl-NR11R12 -COC9-, C20alkyl, -C1-C6alkyl-O-C1-C6alkyl-O-C1-C6alkyl or -CH2O(C=O)C1-C6alkyl; <u>or</u>, at …
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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 January 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 2021.
- 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.