Benzamide derivatives
CA 1195993 A · Owner: May & Baker Limited · Inventors: Bull, Bernard T.; Cook, David C.; Ashton, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
48-, ABSTRACT, "BENZAMIDE DERIVATIVES" Benzamide derivatives of the general formula: I, wherein A represents a divalent straight- or branched-chain alkylene group containing from 1 to 6 carbon atoms and R1 represents a halogen atom or a hydroxy mercapto, amino, nitro, cyano, carboxy or carbamoyl group or an alkyl fluorine substituted alkyl, alkoxy, alkylthio alkyl-, sulphinyl, alkylsulphonyl, alkoxycarbonyl alkylamino, dialkylamino, alkylcarbamoyl dialkylcarbamoyl, alkanoyl, alkanoyloxy or alkanoylamino group and m represents zero or the integer 1, 2 or 3, R2 represents a hydrogen atom or an alkyl group, R3 represents a halogen atom or a hydroxy, amino, nitro, cyano, carboxy or carbamoyl …
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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 October 29, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2002.
- 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
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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.