Patents by Inventor Friedrich W. Zilliken

Friedrich W. Zilliken 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).

  • Benzopyrans and use thereof in treating vascular diseases
    Patent number: 4814346
    Abstract: Isoflavans of the formula I ##STR1## wherein the groups OR, R', R" and ring B are as defined in the specification, exhibit valuable pharmacological properties, especially for the treatment of vascular diseases. They are prepared by methods known per se.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: March 21, 1989
    Assignee: Zyma SA
    Inventors: Alban I. Albert, Friedrich W. Zilliken