Benzoylurea compounds, process for their production and pesticides containing them
CA 1340938 C · Owner: Haga, Takahiro · Inventors: Imai, Osamu; Yoshida, Kiyomitsu; Fujii, Yasuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A benzoylurea compound having the formula: (see formula I), wherein each of X1 and X2 is a hydrogen atom a halogen, atom or a methyl group, provided that X1 and X2 are not simultaneously hydrogen atoms, Y is independently a hydrogen atom, a halogen atom, an alkyl group which may be substituted by halogen, a -CO2R1 group wherein R1 is a hydrogen atom, a cation or an alkyl group or a -OR1 group, wherein R1 is as defined above A1 is =N- or (see formula II) wherein Y is as defined above, W is an oxygen atom a sulfur atom, (see formula III) or wherein R1 is as defined above k is an , integer of from 1 to 3, ~ is 0 or 1 and Ar is (see formula IV), wherein Z is independently a hydrogen atom a …
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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
- Granted March 28, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 28, 2017.
- 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.