5-(1-aminocyclohexyl)-2(1h)-pyridinone and related compounds
CA 2063594 C · Owner: Hoechst Marion Roussel, Inc. · Inventors: Effland, Richard Charles; Fink, David Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are described compounds of the formula (see formula 1), where, n is 1, 2 or 3; R1 is hydrogen, formyl, loweralkylcarbonyl arylloweralkylcarbonyl, loweralkyl, arylloweralkyl (see formula 2) or (see formula 3), R5 and R6 being independently loweralkyl or alternatively the group, (see formula 4) taken as a whole is (see formula 5), (see formula 6), (see formula 7) or (see formula 8), -60-, R2 is hydrogen loweralkyl, loweralkenyl, arylloweralkyl -CH2C.ident.CH, R7 and R9 being independently loweralkyl or alternatively the group , taken as a whole is R3 is hydrogen or loweralkyl; and, R4 is hydrogen or loweralkyl; which compounds are useful ae analgesic agents and also for treating various …
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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 August 16, 1990 and granted July 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 2012.
- 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.