Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6938442 | Method for elongating a cylinder of silica glass | Clemens Schmitt, Karsten Bräuer, Uwe Christiansen, Heinz Fabian | 2005-09-06 |
| 6360563 | Process for the manufacture of quartz glass granulate | Rolf Gerhardt, Werner Ponto, Waltraud Werdecker | 2002-03-26 |
| 5979186 | Method for the manufacture of SiO.sub.2 granular material | Fritz-Ulrich Kreis, Klaus Arnold | 1999-11-09 |