Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6921882 | Ceramic cooktop | Rainer Gadow, Andreas Killinger, Christian Friedrich, Chuanfei Li | 2005-07-26 |
| 6884471 | Method of producing a light-scattering layer on a glass or glass ceramic body | Bernd Schultheis, Cora Krause | 2005-04-26 |