Use of cn-substituted benzimidazoles
CA 2111146 A1 · Owner: Haberkorn, Axel · Inventors: Lunkenheimer, Winfried; Haberkorn, Axel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Use of CN-substituted benzimidazoles, Abstract The invention relates to the use of CN-substituted benzimidazoles of the general formula (I) (I), X1, X2, X3 and X4 independently of one another in each case represent hydrogen, halogen, cyano or nitro or, represent in each case optionally substituted alkyl alkoxy, alkythio, alkysulphinyl, alkysulphonyl or cycloalkyl, or represent optionally substituted fused-on dioxyalkylene, or represent, hydroxycarbonyl alkyoxycarbonyl, alkoxycarbonyl or, cycloalkyloxycarbonyl or represent in each case, optionally substituted amino or aminocarbonyl or, represent in each case optionally substituted aryl aryloxy, arylthio, arylsulphinyl, arylsuphonyl …
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 December 10, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2015.
- 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.