Benzyl ketones and fungicides containing them
CA 2045044 A1 · Owner: Basf Aktiengesellschaft · Inventors: Sauter, Hubert; Roehl, Franz; Lorenz, Gisela
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
O.Z. 0050/41690, ABSTRACT OF THE DISCLOSURE: Benzyl ketones of the formula where, X is CH or N, Y is O or NR4, R1 R2 are H or alkyl, R3 is halogen, cyano nitro, alkyl, cycloalkyl, alkoxy, haloalkyl arylalkyl, arylalkoxy, aryloxy or aryl and the aryl groups in, turn may be substituted R4 is OH, alkoxy or arylalkoxy and, R5 is H methyl, halogen or methoxy, and fungicides containing these compounds.
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
- Filed June 20, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2013.
- 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.