Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6669740 | Dye preparations comprising azo dyes | Karl Siemensmeyer, Bernd Siegel, Volker Bach, Günther König, Rudiger Sens | 2003-12-30 |
| 6631958 | Child seat fixing device | Ralf Liedhegener, Peter Reimer, Heiko Utsch, Michael Wagner, Bodo Zirnstein | 2003-10-14 |
| 6607565 | Colorant preparations | Bernd Siegel, Karl Siemensmeyer | 2003-08-19 |
| 6537331 | Dye preparations containing azo dyes | Karl Siemensmeyer, Bernd Siegel, Volker Bach, Günther König, Rudiger Sens | 2003-03-25 |