Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6171525 | Process for the production of a photochromic object | Manfred Melzig, Herbert Zinner, Herbert Schuster | 2001-01-09 |
| 5498686 | Optically transparent photochromic plastic material | Manfred Melzig, Herbert Schuster, Guiseppe Martinuzzi | 1996-03-12 |
| 4852974 | Anti-reflection film for an optical element consisting of an organic material | Manfred Melzig | 1989-08-01 |