Insecticidal ethers
CA 1300159 C · Owner: Whittle, Alan J. · Inventors: Whittle, Alan J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides novel insecticidal ethers of formula (I) :, (I), wherein R4 represents a group selected from those groups represented by R5 in insecticidally active compounds of formula :, R3 is selected from fluoromethyl and difluoromethyl and, either (a) R1 and R2 represent alkyl of one two, three or, four carbon atoms, or (b) R1 and R2 taken together with the adjacent carbon atom form a cycloalkyl ring of four five, or six carbon atoms, and processes for their preparation. The invention also provides insecticidal compositions comprising the compounds of formula (I) and methods for combating insect pests therewith.
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 5, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 2009.
- 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.