Patents by Inventor Kruger

Kruger 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-(4-Acylamino-phenyl)-2-amino-ethanols and salts thereof
    Patent number: 4214001
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen or cyano;R.sub.2 is fluorine, cyano, trifluoromethyl, nitro or alkyl of 1 to 4 carbon atoms;R.sub.3 is alkoxy of 1 to 5 carbon atoms, alkenyloxy of 2 to 5 carbon atoms, aryloxy of 6 to 10 carbon atoms, aralkoxy of 7 to 11 carbon atoms, or --NR.sub.5 R.sub.6, where R.sub.5 and R.sub.6 are each hydrogen, alkyl of 1 to 5 carbon atoms, alkenyl of 2 to 5 carbon atoms, aryl of 6 to 10 carbon atoms or aralkyl of 7 to 11 carbon atoms; andR.sub.4 is cycloalkyl of 3 to 5 carbon atoms or alkyl of 3 to 5 carbon atoms;and non-toxic, pharmacologically acceptable acid addition salt thereof. The compounds as well as the salts are useful as analgesics, uterospasmolytics and antiasthmatics.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: July 22, 1980
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Gunther Engelhardt, Johannes Keck, Kruger, Klaus Noll, Helmut Pieper