Dibenzob,eoxepine derivatives, process for producing them and medicaments containing them
CA 2175070 A1 · Owner: Friebe, Walter-Gunar · Inventors: Tibes, Ulrich; Scheuer, Werner; Friebe, Walter-Gunar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I), in which Q is hydrogen a hydroxy group or a C1 to , C8 alkoxy group which may, if desired, be substituted with carboxyl or C1 to C6 alkoxy carbonyl and either Y and Z together form a (a) group and X is hydrogen, C1 to C6 alkyl or C2 to C6 alkenyl or Y and X together form a (b) group or an alkylene radical of 2-4 carbon atoms and Z is hydrogen C1 to C6 , alkyl or C1 to C6 alkanoyl, where R is hydrogen or a C1 to C6 alkyl radical and their physiologically tolerable salts process for producing them and , medicaments containing these compounds for the treatment of inflammatory and allergic diseases.
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 October 22, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2016.
- 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.