Patents by Inventor Andrè Claussner

Andrè Claussner 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).

  • 19-Nor-steroids
    Patent number: 6790971
    Abstract: A 19-nor-steroid having a formula selected from the group consisting of wherein the A and B rings have a structure selected from the group consisting of having hormonal properties and their preparation and novel intermediates.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: September 14, 2004
    Assignee: Aventis Pharma S.A.
    Inventors: Andrè Claussner, Lucien Nedelec, Daniel Philibert, Patrick Van De Velde, François Nique, Jean-Georges Teutsch