Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5312919 | Photooxidation products and derivatives thereof of merocyanine-540, their preparation and uses | Kirpal S. Gulliya, J. Lester Matthews, Udo Schneider | 1994-05-17 |
| 5124449 | Azaporphyrin derivatives | Hartmann Koenig, Christian Eickmeier, Michael VOELKER, Thomas Wessel | 1992-06-23 |
| 4798891 | Vinylogous porphyrins | Martin Gosmann | 1989-01-17 |