Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5753028 | Ferriferous bismuth vanadate pigments | Hansulrich Reisacher, Helmut Knittel, Norbert Mronga, Gunter Etzrodt, Henning Wienand | 1998-05-19 |
| 5626661 | Luster pigments based on multiply coated plateletlike silicatic substrates | Raimund Schmid, Norbert Mronga, Joerg Adel | 1997-05-06 |
| 5540770 | Luster pigments with nitrogen-containing metal layers | Raimund Schmid, Norbert Mronga, J org Adel | 1996-07-30 |
| 5411586 | Luster pigments containing bismuth vanadate | Raimund Schmid, Norbert Mronga, Christoph Schwidetzky | 1995-05-02 |
| 5273577 | Bismuth phosphovanadate pigments | Egon Liedek, Helmut Knittel, Hans Ulrich Reisacher, Norbert Mronga, Henning Wienand | 1993-12-28 |