Process for the preparation of new sulphamoylbenzoic acids
CA 1083160 A · Owner: Ciba-Geigy Ag · Inventors: Habicht, Ernst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the preparation of new sulphamoylbenzoic acids Abstract of the Disclosure, The invention relates to processes for the preparation of sulphamoylbenzoic acids of the formula in which R1 is a substituted or unsubstituted aryl radical X is oxygen or sulphur, R2 is hydrogen lower alkyl or, oxa-lower alkyl or an aryl-radical,Py is a substituted or unsubstituted 1-pyrrolyl-radical and n is an integer from 0 to 4 and salts of these compounds, by methods known per se. The new compounds are valuable diuretics and saliuretics.
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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 August 5, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 1997.
- 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.