Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665132 | Process for the sintering of hollow cylinders of silicon dioxide soot | Klaus Ruppert, Uwe Christiansen, Michael Hünermann, Anton Steinkohl | 1997-09-09 |
| 5665139 | Mold for production of a quartz glass component | Klaus Ruppert, Uwe Christiansen | 1997-09-09 |