Heteroarylamino- and heteroaryloxypyridinamines and related compounds, a process for their preparation and their use as dermatological agents
CA 2019957 C · Owner: Freed, Brian Scott · Inventors: Olsen, Gordon Edward; Klein, Joseph Thomas; Hamer, Russell Richard Lee
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 I), where, n is 0 or 1;, X is Q or NR2 R2 being hydrogen, loweralkyl or loweralkylcarbonyl; Z is NO2 or NHR where R is hydrogen loweralkyl, arylloweralkyl or loweralkylcarbonyl; and R1 is, (see formula II, III, IV, V, VI or VII), (see formula VIII, IX, X, XI, XII or XIII) wherein R3 is , hydrogen, loweralkyl or loweralkylcarbonyl; m is 1 or 2; each R4 is independently hydrogen or loweralkyl; and Y is hydrogen halogen, loweralkyl, loweralkoxy or trifluoromethyl; which compounds are useful as topical antiinflammatory agents for the treatment of, various dermatoses.
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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 June 27, 1990 and granted June 12, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 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.