Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698267 | Method for fabricating high-activity electrodes for exhaust gas sensors | Karl-Hermann Friese, Frank Stanglmeier | 1997-12-16 |
| 5670032 | Electro-chemical measuring sensor with a potential-free sensor element and method for producing it | Karl-Hermann Friese, Helmut Weyl, Siegfried Nees | 1997-09-23 |
| 5662786 | Electrochemical sensor | Karl-Hermann Friese, Helmut Weyl, Werner Wieland | 1997-09-02 |
| 5630920 | Electrochemical sensor for determining the oxygen concentration in gas mixtures | Karl-Hermann Friese, Frank Stanglmeier | 1997-05-20 |