Patents by Inventor Heidrun Koppen

Heidrun Koppen 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).

  • Solid electrolyte sensor for measuring gaseous anhydrides
    Patent number: 6203678
    Abstract: A galvanic solid electrolyte sensor for measuring gaseous anhydrides includes a ceramic solid electrolyte that has a material that conducts electrons, a measuring electrode that includes a pure or doped alkaline or alkaline earth salt and a reference electrode spatially separated from the measuring electrode and sealed off from the anhydride measuring gas by a gas-tight enclosure. The reference electrode is made of a metal material that conducts electrons. The gas-tight enclosure is made of a layer of a glass containing zirconium and lead that covers only the material of the reference electrode, with only a marginal area of this layer abutting the solid electrolyte.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: March 20, 2001
    Assignee: Heraeus Electro-Nite International N.V.
    Inventors: Volker Leonhard, Ulrich Guth, Hartmut Erdmann, Marianne Ilgenstein, Heidrun Koppen, Dieter Fischer