Patents by Inventor Kurt Menzl

Kurt Menzl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for preparing 3-methoxy-4-(4'-aminobenzenesulfonamido)-1,2,5-thiadiazole
    Patent number: 4151164
    Abstract: 3-Methoxy-4-(4'-aminobenzenesulphonamido)-1,2,5-thiadiazole is prepared by reaction of 3-methoxy-4-chloro-1,2,5-thiadiazole with sulfanilamide in dimethylsulfoxide as solvent and in the presence of alkali hydroxides or carbonates using a reaction temperature of from ambient temperature to 95.degree. C., whereby per mole of thiadiazole-compound from 1.2 to 1.5 mole of sulfanilamide and from 1.5 to 3 moles of the alkali hydroxide or carbonate are used, whereafter the reaction product is obtained by acidification.
    Type: Grant
    Filed: January 10, 1978
    Date of Patent: April 24, 1979
    Assignee: Chemie Linz Aktiengesellschaft
    Inventors: Kurt Menzl, Rudolf Franzmair