Patents by Inventor Angelika Esch

Angelika Esch 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).

  • Use of antigestagens for softening the nonpregnant cervix
    Patent number: 4891368
    Abstract: Antigestagens are useful for softening the nonpregnant cervix.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: January 2, 1990
    Assignee: Schering Aktiengesellschaft
    Inventors: Krzysztof Chwalisz, Sybille Beier, Angelika Esch, Walter Elger