Benzo-fused heterocyclic anti-ulcer agents
CA 1215709 A · Owner: Wyeth · Inventors: Strike, Donald P.; Schiehser, Guy A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Processes for preparing compounds of the formula: wherein B is a moiety having the formula: or , ;, R is mono- or dihalo, amino, nitro cyano, hydroxy, tri-, fluoromethyl, mercapto lower alkyl, lower alkoxy, alkanoyl, cycloalkyl of 4-7 carbon atoms carboxy, loweralkoxycarbonyl, mono- or di-lower alkyl substituted amino alkanoylamino, lower alkyl thio, lower alkylsulfonyl sulfamoyl, lower alkyl, substituted sulfamoyl phenyl or phenyl substituted with, halo lower alkyl, lower alkoxy, trifluoromethyl hydroxy, amino, cyano or nitro;, X is SO2 SO, S or C=O;, and, A is an amine selected from the group , or, wherein R1 is hydrogen or R2CH2 wherein R2 is mono- or diloweralkylamino, mono- 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
- Granted December 23, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 2003.
- 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.