Patents by Inventor Herman Hindermayr

Herman Hindermayr 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).

  • 1-Oxo-1H-pyrimido[6,1-b]benzthiazole derivatives
    Patent number: 4232024
    Abstract: Anti-allergy novel 1-oxo-1H-pyrimido[6,1-b]benzthiazole derivatives of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently is hydrogen, halogen, hydroxy, nitro, trifluoromethyl, or lower alkyl, alkoxy or alkylthio, orR.sub.2 and R.sub.3 together are alkylenedioxy, andX is hydroxy, alkoxy or tetrazolyl-5-amino,or salts thereof, as well as their production by saponification of ##STR2## or tautomers thereof, followed by acidification.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: November 4, 1980
    Assignee: Boehringer Mannheim GmbH
    Inventors: Werner Winter, Herman Hindermayr, Egon Roesch, Androniki Roesch, Otto-Henning Wilhelms