Patents by Inventor John M. Sellstedt

John M. Sellstedt 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).

  • Tetrazole-5-carboxamide derivatives
    Patent number: 4116960
    Abstract: Anti-allergic agents of N-aromatic 1H-(or 2H) tetrazole-5-carboxamide derivation present the following formulae: ##STR1## in which R.sup.1 is --CN or --CONH.sub.2 ;R.sup.2 is hydrogen, lower alkyl, lower alkoxy, halo, polyhalo(lower)alkyl, lower alkyl carbonyl or carb(lower)alkoxy;X is --CH.sub.2 --, --O-- ##STR2## where R.sup.3 is lower alkyl and R.sup.4 is hydrogen or lower alkyl;Or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: September 24, 1976
    Date of Patent: September 26, 1978
    Assignee: American Home Products Corporation
    Inventors: John M. Sellstedt, Dieter H. Klaubert