Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5110715 | Photographic reversal process | Ubbo Wernicke, Helmut Haseler, Gustav Tappe | 1992-05-05 |
| 5006440 | Process for stabilizing photographic silver images | Hans hlschlager | 1991-04-09 |
| 4987059 | Process for stabilizing photographic silver images | Helmut Haseler, Paul Marx, Heinz Meckl, Hans hischlager | 1991-01-22 |
| 4886737 | Stabilization of a photographically produced silver image | Paul Marx | 1989-12-12 |
| 4760015 | Stabilization of a photographically produced silver image using an amino-1,2,4-triazole | Gunther Mahlberg, Paul Marx, Hans hlschlager | 1988-07-26 |
| 4209583 | Corrosion preventative for two-bath stabilizer baths | Artur Botta, Anita von Konig, Christian Rasp | 1980-06-24 |