Photoactive bithienyl pesticides
CA 1268469 C · Owner: Burkart, Susan E. · Inventors: Roush, David M.; Phillips, Richard B.; Burkart, Susan E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Bithienyl compounds of the following structural formula are phototoxic insecticides and acaricides: wherein, R1 is selected from hydrogen, halogen alkyl, haloalkyl, alkoxy, haloalkoxy, haloalkenoxy phenyl, phenoxy, nitro, alkylsulfinyl, alkylsulfonyl and, alkylthio provided R4 is other than hydrogen; R2 is selected from hydrogen and halogen or R1, and R2 at adjacent positions are joined to form C4H4;, R3 is selected from hydrogen, alkyl thienyl, and, phenyl optionally substituted with alkyl alkoxy, or, 1-2 halogen; and, R4 is selected from hydrogen halogen, alkyl, haloalkyl, alkoxy, alkylthio alkylsulfinyl, halo-, alkenylthio, formyl alkylcarbonyl, alkoxycarbonyl, phenylcarbonyl …
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 May 1, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 1, 2007.
- 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.