Derivatives of n-phenylpyrazoles
CA 1330089 C · Owner: Rhone-Poulenc Agriculture Limited · Inventors: Hatton, Leslie Roy; Buntain, Ian George; Pearson, Christopher John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
N-Phenylpyrazole derivatives of the formula: (I), wherein R1 represents cyano, nitro halogen, acetyl or, formyl;, R2 represents R5SO2 R5SO or R5S in which R5 is optionally, halogen substituted alkyl alkenyl or alkynyl;, R3 represents a hydrogen atom or a group NR6R7 wherein R6 and R each represent hydrogen, alkyl, alkenylalkyl alkynylalkyl, formyl, optionally halogen substituted alkanoyl, optionally halogen substituted alkoxycarbonyl or, alkoxymethyleneamino, halogen, or R6 and R7 together form a cyclic imide and R4 represents a substituted phenyl group possess arthropodicidal, plant nematocidal anthelmintic and, anti-protozoal properties; their preparation compositions, containing them and …
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 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.