Benzoylphenylurea derivatives, their preparation and use as pesticides
CA 1190246 A · Owner: Shell Canada Limited · Inventors: Anderson, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pesticidally active benzoylphenylurea derivatives of formula:-, (I), wherein Hal is a halogen atom; B is a hydrogen or halogen atom; X is halogen, cyano, haloalkyl, haloalkoxy or phenoxy, substituted by one or more substituents selected from the group consisting of nitro, cyano, halogen, haloalkyl and haloalkoxy; n is 1,2 or 3; and R is a haloalkyl group or a phenyl group optionally-substituted by one ore more substituents selected from the group consisting of nitro, alkyl and halogen.
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 July 9, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2002.
- 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.