Patents by Inventor Elisabeth Becher

Elisabeth Becher 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).

  • 1,2,3,4,10,19-Hexanor-9-oxo-5,9-seco-25D-spirostan-5-oic acid
    Patent number: RE29163
    Abstract: The spirostan derivative 1,2,3,4,10,19-hexanor-.[.5.]. .Iadd.9.Iaddend.-oxo-5,9-seco-25D-spirostan-5-oic acid is obtained by the microbiological degradation of diosgenin utilizing Proactinomyces restrictus Turfitt CBS 157.45 or enzymes derived therefrom. The aforesaid spirostan derivative is useful as an intermediate in the synthesis of medicinally valuable 9.beta.,10.alpha.-steroids and norsteroids.
    Type: Grant
    Filed: March 9, 1976
    Date of Patent: March 29, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Elisabeth Becher, Hans Els, Arno Johannes Schocher