N-phenylpyrazole derivatives
CA 1330088 C · Owner: Rhone-Poulenc Agriculture Limited · Inventors: Hatton, Leslie Roy; Hawkins, David William; Buntain, Ian George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
4-Nitro-N-phenylpyrazole derivatives of the formula:, I, wherein R1 represents fluorine chlorine or bromine, R2, represents chlorine or bromine or alkyl or alkoxy group, optionally substituted by halogen R3 is as defined for, or represents hydrogen R represents halogen, cyano or, nitro, R5 represents hydrogen an amino group -NR6R7 wherein, R6 and R7 each represents hydrogen, alkyl, formyl alkanoyl, (or R6 and R7 together form a cyclic imide) which may be unsubstituted or substituted by halogen alkoxycarbonyl, which may be unsubstituted or substituted by halogen or R5, represents alkoxymethyleneamino which may be unsubstituted or substituted on methylene by alkyl, or represents fluorine, …
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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 June 7, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2011.
- 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.