Patents by Inventor Bernd Iffert

Bernd Iffert 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).

  • Oxidation inhibitors in prostane derivatives
    Patent number: 6512139
    Abstract: The invention relates to the use of an oxidation inhibitor, i.e. active carbon, for ambient air in industrial manufacturing, especially in the processing of prostane derivatives, whereby the oxidation inhibitor removes ozone from the process air before contact with said prostane derivatives. The concentration of decomposition products is reduced.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: January 28, 2003
    Assignee: Schering Aktiengesellschaft
    Inventors: Torsten Wagner, Martin Wessel, Ralph Lipp, Bernd Iffert, Heinrich Michel, Jürgen Westermann, Helmut Dahl, Werner Skuballa