Aminobenzophenones as inhibitors of il-1.beta. and tnf-.alpha.
CA 2393312 C · Owner: Ottosen, Erik Rytter · Inventors: Ottosen, Erik Rytter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound of general formula (I), wherein R1 represents a substituent selected from the group consisting of halogen hydroxy, mercapto, trifluoromethyl, amino (C1-C3)alkyl, (C2-C3)olefinic group, (C1-C3)alkoxy (C1-C3)alkylthio, (C1-C6)alkylamino, (C1-C3)alkoxycarbonyl cyano, -CONH2, phenyl, and nitro; R2 represents one or more same or different substituents , selected from the group consisting of hydrogen halogen, hydroxy, mercapto, trifluoromethyl amino, (C1-C3)alkyl, (C2-C3)olefinic group (C1-C3)alkoxy, (C1-C3)alkylthio, (C1-C6)alkylamino (C1-C3)alkoxycarbonyl, cyano, -CONH2, phenyl and nitro; R3 represents one or more, same or different substituents selected from the group consisting …
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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 November 29, 2000 and granted July 12, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2022.
- 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.