Patents by Inventor Wolfgang Herrman

Wolfgang Herrman 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).

  • Water-soluble sulfonated diphosphines
    Patent number: 5274183
    Abstract: The preparation of water-soluble diphosphines derived from biaryl compounds by reaction with a solution of SO.sub.3 in sulfuric acid.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: December 28, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Wolfgang Herrman, Christian Kohlpaintner, Helmut Bahrmann