Benzoyl urea compound
CA 1294963 C · Owner: Kikuchi, Masahiro · Inventors: Koyanagi, Toru; Haga, Takahiro; Yokoyama, Kazumasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A benzoyl urea compound having the formula: (I), wherein X is a halogen atom, a nitro group or a trifluoromethyl group, provided that when Y is a nitro group X is a halogen atom, or a nitro group, Y is a hydrogen atom a halogen atom, a nitro, group or a trifluoromethyl group Z1 is a halogen atom or a tri-, fluoromethyl Z2 is a hydrogen atom or a halogen atom and A is a nitrogen atom, or the formula, (II), wherein each of X1 and X2 is a hydrogen atom a halogen atom or a, nitro group, provided that when Y is a nitro group X1 is a, hydrogen atom, Y is a hydrogen atom a halogen atom, a nitro, group or a trifluoromethyl group and Z is a hydrogen atorn, a, halogen atom or a trifluoromethyl group …
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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 January 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 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.