Substituted (quinolin-2-yl-methoxy)phenyl-acyl-sulphonamides and -cyanamides, processes for their preparation and their use in medicaments
CA 2017135 C · Owner: Muller-Peddinghaus, Reiner · Inventors: Theisen-Popp, Pia; Mohrs, Klaus-Helmut; Fruchtmann, Romanis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A quinolin-2-yl-methoxy)phenylacyl-sulphonamide or -cyanamide of the formula, (SEE FORMULA I) in which, A, B, D, E, L and G are identical or different and - represent hydrogen, hydroxyl, halogen carboxyl, Nitro, trifluoromethyl, trifluoromethoxy or a group of the formula -NR3R4, in which, R3 and R4 are identical or different and denote hydrogen, straight-chain or branched alkyl having up to 8 carbon atoms or aryl having 6 to 10 carbon atoms, - represent straight-chain or branched alkyl alkoxy or alkoxycarbonyl in each case having up to 12 carbon atoms, - represent aryl having 6 to 10 carbon atoms R1 - represents cycloalkyl having 3 to 8 carbon atoms R2 - represents hydrogen or, - …
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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 May 18, 1990 and granted July 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 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.