Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6423656 | Synthetic quartz glass preform | Andreas Menzel, Andreas Voitsch | 2002-07-23 |
| 6415630 | Method and device for producing a homogenous sheet of quartz glass without streaks | Andreas Menzel, Walter Nadrag, Wolfgang Schmidt | 2002-07-09 |