Aminoquinoline derivatives
CA 2133620 A1 · Owner: F. Hoffmann-La Roche Ag · Inventors: Jolidon, Synese; Jaquet, Catherine; Hofheinz, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is concerned with aminoquinoline derivatives of the general formula, I, wherein the symbols R1 to R6 signify hydrogen or one or two thereof signifies (signify) alkyl and the others signify hydrogen, R7 and R8 signify alkyl, alkenyl or aralkyl or together with the N atom signify pyrrolidine or piperidine optionally substituted by alkyl, octahydroindole or 3azabicyclo3,2,2nonane and n = 0 or 1 or wherein the symbols R1 and R3 signify tri- or tetramethylene, all remaining symbols to R6 signify hydrogen n = 0 and, R7 and R8 have the above significances or wherein the symbols R1 and R7 signify methylene or dimethylene and n = 1, R1 and R7 signify di- or trimethylene and n = 0 R3 …
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 October 4, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 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.