O-acyl-4-phenyl-cycloalkanols, their salts, medicaments containing such compounds, and their use, as well as a method of preparing them
CA 2188784 A1 · Owner: Woitun, Eberhard · Inventors: Budzinski, Ralph-Michael; Maier, Roland; Eisele, Bernhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns O-acyl-4-phenyl-cyclohexanols of the general formula (I) in which n stands for the numbers 0 or 1 m stands for the numbers 1 or 2, p stands for the numbers 0 or 1 R1 and R2 each stand for hydrogen, lower alkyl, alkenyl or alkinyl, these groups possibly being further substituted or together with the intermediate nitrogen atom forming 5 to 7-member saturated, monocyclic heterocyclic rings which may possibly be further interrupted by an oxygen or sulphur atom or an imino group R3, R4, R5 and R6 stand for hydrogen , or lower alkyl R5 additionally also stands for lower alkoxy R7 stands for , hydrogen, cycloalkyl, phenyl or substituted phenyl naphthyl, …
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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
- Filed April 25, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 25, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2016.
- 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.