Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6428581 | Concentrated leucoindigo solutions | Rudolf Kruger, Peter Miederer | 2002-08-06 |
| 6007587 | Leuco vat dye preparations in granule form | Rudolf Kruger, Peter Miederer, Eberhard Beckmann | 1999-12-28 |
| 5888254 | Leuco vat-dye preparations in granule form | Rudolf Kruger, Peter Miederer, Harald Schluter, Peter Schultz, Manfred R. Wolf | 1999-03-30 |
| 5536842 | Purification of indigo | Udo Bergmann, Reinhold Kohlhaupt | 1996-07-16 |