Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6758082 | Sealing system for a gas sensor and a method for manufacturing the sealing system | Helmut Weyl, Siegfried Nees, Bernhard Wild, Thomas Egner, Peter Dettling | 2004-07-06 |
| 6699807 | Glass ceramic material, method for producing the same and spark plug containing such a glass ceramic material | Rudolf Pollner, Imke Koengeter, Ulrich Eisele | 2004-03-02 |
| 6693053 | Glass and glass powder mixture and use thereof for the production of a glass ceramic | Rudolf Pollner, Ulrich Eisele, Peter Wange | 2004-02-17 |