Benzenesulfonamide derivatives and a process for the preparation thereof
CA 1311763 C · Owner: Granzer, Ernold · Inventors: Kerekjarto, Bela; Granzer, Ernold; Hropot, Max
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula I, with R1 equal to H or (cyclo)alk(en)yl R2 equal to H or alkyl, R3 equal to alkyl R4/R5 equal to H, alkyl or acyl, and Y equal to H, alkyl, CF3 or Hal, are described as are processes for the, preparation thereof. The compounds of the formula I are effective diuretics and antihypertansive agents with a lipidlowering action.
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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 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 2009.
- 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.