Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821628 | Glass-ceramic cooking panel that makes deposited material, such as dirt, less conspicuous | Bernd Schultheis, Monica Cotlear De Witzmann, Roland Dudek, Friedrich Siebers, Klaus Schoenberger | 2004-11-23 |
| 6673504 | Method for applying a coating to a surface of a material | Michael Zimmer, Horst Stedron | 2004-01-06 |