Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821628 | Glass-ceramic cooking panel that makes deposited material, such as dirt, less conspicuous | Bernd Schultheis, Waldemar Weinberg, Monica Cotlear De Witzmann, Roland Dudek, Klaus Schoenberger | 2004-11-23 |
| 6794020 | Cooking device with a glass-ceramic panel providing a cooking surface in a variety of different colors and method of making same | Monica Cotlear De Witzmann, Angelina Milanovska, Daniela Petto, Dietmar Wennemann, Dieter Schoenig | 2004-09-21 |
| 6673729 | Glass ceramic | Hans-Werner Beudt, Dirk Sprenger | 2004-01-06 |