N-phenylpyrazol-4-yl ether derivatives
CA 1332608 C · Owner: Hawkins, David William · Inventors: Hawkins, David William; Hatton, Leslie Roy; Pennicard, Richard Glyn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An N-phenylpyrazol-4-yl ether derivative of the formula:, I , wherein R1 represents halogen alkyl or alkoxy unsubstituted, or substituted by halogen alkylthio or alkylsulphinyl, substituted by one or more halogen atoms nitro, cyano, or, alkylsulphonyl unsubstituted or substituted by halogen and n is 1 to 5, R3 represents hydrogen, halogen cyano, nitro or, alkyl group R which may be unsubstituted or substituted by halogen, R4 represents alkyl, alkenyl or alkynyl which is substituted by halogen, R5 represents hydrogen or an amino group NR6R7 wherein R6 and R7 represent hydrogen alkyl, formyl or alkanoyl (or R6 and R7 together form a 5 or 6 membered cyclic imide) which may be unsubstituted or …
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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 October 18, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 18, 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.