Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6432162 | Process for melting ashes, slags or glass | Christian Steiner, Beat Stoffel, Christian Wieckert | 2002-08-13 |
| 6336415 | Method for the heat treatment of solids | Beat Stoffel | 2002-01-08 |