Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6924035 | Method for producing polymer coated pigment particles by precipitation | Helmut Auweter, Walter Machtle, Manfred Mielke, Rudiger Sens, Karl Siemensmeyer | 2005-08-02 |
| 6863914 | Stable, aqueous dispersions and stable, water-dispersible dry powders of xanthophylls, and production and use of the same | Helmut Auweter, Erik Luddecke | 2005-03-08 |
| 6844377 | Polymer particles containing dye | Helmut Auweter, Robert Heger, Ulrike Schlosser, Karl Siemensmeyer | 2005-01-18 |