Patents by Inventor Hartenstein

Hartenstein 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).

  • Aromatic cardenolide acetals
    Patent number: 3936438
    Abstract: The present invention is concerned with new cardenolide acetals of the general formula: ##SPC1##Wherein R.sub.1 is an unsubstituted or substituted glycosyl radical and Ar is an unsubstituted or substituted aryl or heteroaryl radical and with the preparation thereof. These compounds exert a positive inotropic action on the cardiac muscle of mammals.
    Type: Grant
    Filed: September 27, 1974
    Date of Patent: February 3, 1976
    Assignee: Warner-Lambert Company
    Inventors: Hartenstein, Gerhard Satzinger, Manfred Herrmann