Patents by Inventor Silke Habersang

Silke Habersang 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).

  • Quaternary xanthinylalkyl nortropine
    Patent number: 4060618
    Abstract: There are prepared quaternary xanthinylalkylnortropine derivatives of the general formula I ##STR1## where T represents a theophyllinyl-7 radical or a theobrominyl-(1)-radical, Alk is a straight or branched chain alkylene group having 2 to 10 carbon atoms or such a group substituted by a hydroxyl group, R is an alkyl group of 1 to 4 carbon atoms and A.sup.(-) is an equivalent to an anion of a physiologically compatible mono- or polyvalent acid. The compounds are useful as medicines having a spasmolytic activity.
    Type: Grant
    Filed: February 6, 1976
    Date of Patent: November 29, 1977
    Assignee: Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler
    Inventors: Karl H. Klingler, Rudolf Aurich, Silke Habersang