Aromatic carboxylic amides
CA 2020887 A1 · Owner: Klaus, Michael · Inventors: Mohr, Peter; Klaus, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, The compounds of the general formula I, wherein R1 represents hydrogen, halogen or OR5; R2 represents hydrogen, lower-alkyl, lower-alkoxy or halogen: R3 and R4 each independenely represent lower-alkyl or taken together represent alkylene with 3-5 C atoms in a straight-chain; R5 signifies hydrogen, acyl, lower-alkoxycarbonyl or lower-alkyl which can be substituted by amino, mono-alkylamino di-alkylamino or a residue -N-Het; -N-Het signifies a 5-8-membered, saturated or unsaturated monocyclic heterocycle attached via a N atom; and M signifies -CONH- or -NHCO-, can be used as medicaments e.g. for ehe treatment of, neoplasms and dermatological indications of an inflammatory and …
Read the whole patent
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 July 11, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 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.