Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5286420 | Production of light polarizing films | Uwe Claussen, Friedrich W. Krock | 1994-02-15 |
| 4978607 | Photographic recording material | Wolfgang Himmelmann, Hans-Theo Buschmann, Heinz Quambusch | 1990-12-18 |