Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6669740 | Dye preparations comprising azo dyes | Bernd Siegel, Volker Bach, Manfred Herrmann, Günther König, Rudiger Sens | 2003-12-30 |
| 6607565 | Colorant preparations | Manfred Herrmann, Bernd Siegel | 2003-08-19 |
| 6597426 | Flat element with a cholesteric liquid crystal structure | Peter Schuhmacher, Markus Bröcher, Christian Kuckertz, Werner Mormann | 2003-07-22 |
| 6537331 | Dye preparations containing azo dyes | Bernd Siegel, Volker Bach, Manfred Herrmann, Günther König, Rudiger Sens | 2003-03-25 |