Benzo-isoquinoline derivatives and analogs and their use in therapeutics
CA 2118920 A1 · Owner: The Upjohn Company · Inventors: Romero, Arthur G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention encompasses: 1) compounds of formula (I) wherein p and s are independent and may be either 1 or 2 wherein , R1 is -H, -Halo, -CN, -CO2H, -CO2R1-1 -CONH2, -CONHR1-1, -CON(R1-1)2, -SH, -SR1-1 -SO2R1-1, -SO2NH2, -SO2NHR1-1, -SO2N(R1-1)2 -OR1-1, -OSO2CF3, -OSO2R1-1, -NH2, -NHR1-1 or -N(R1-1)2; wherein R1-1 is, -H, -(C1-C8 alkyl) -(C1-C8 alkenyl), -(C3-C10, cycloalkyl) -(C6 aryl), -5 or 6 member heterocyclics -(C1-C8, alkyl)-(5 or 6 member heterocyclics) wherein R2 is -H, -Halo, -CN, -CF3, -SH or -SR2-1; wherein R2-1=R1-1, wherein R3 is -H, -(C1-C8 alkyl), -(C1-C8 alkenyl) -(C6 aryl), -(C3-C10 cycloalkyl), -(5 or 6 member heterocyclics) -(C1-C8 alkyl)-5 or 6 member …
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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 September 3, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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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.