Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6057550 | Infrared objective | Matthias Erdmann, Johann Schweiger, Karl Pietzsch | 2000-05-02 |
| 5812309 | Infrared objective | Matthias Erdmann, Johann Schweiger, Karl Pietzsch | 1998-09-22 |
| 4842629 | Method for producing buried regions of raised refractive index in a glass member by ion exchange | Peter Clemens, Herbert Michel | 1989-06-27 |