Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5998319 | Method of producing sintered silicon nitride | — | 1999-12-07 |
| 5114693 | Process for the production of silicon nitride and product made according to the process | Ernst Graf, Werner Gmohling, Georg Schroll, Wolfgang Kobler | 1992-05-19 |