Pyrazole derivatives
CA 1079728 A · Owner: Bayer Aktiengesellschaft · Inventors: Horstmann, Harald; Wehinger, Egbert; Moller, Eike
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pyrazole derivatives of the formula: and pharmaceutically acceptable nontoxic salts thereof wherein, R is hydrogen, trifluoromethyl or alkyl; R1 is hydrogen or alkyl;, R2 is alkyl; R3 is aryl substituted by:, (a) one or two of the same or different substituents selected from the group consisting of halogen, trifluoromethyl, alkyl, alkenyl and alkoxy;, (b) one substituent selected from the group consisting of alkylamino, dialkylamino wherein the alkyl moieties may form a heterocyclic ring with the nitrogen atom to which they are attached, cycloalkyl, cycloalkenyl, trifluoromethoxy, nitro, cyano, carbonamido unsubstituted or substituted by 1 or 2 alkyl moieties sulphonamido 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 June 17, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 17, 1997.
- 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.