Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6933371 | Bisazo dyestuffs based on hydroxynaphthalene carboxylic acid | Gunter Schroder, Sophia Ebert, Karl-Heinz Etzbach, Rainer Tresch | 2005-08-23 |
| 6924035 | Method for producing polymer coated pigment particles by precipitation | Helmut Auweter, Heribert Bohn, Walter Machtle, Manfred Mielke, Karl Siemensmeyer | 2005-08-02 |
| 6903197 | Azoxy dyes and copper complexes thereof | Rainer Tresch, Karl-Heinz Etzbach, Claudia Krah | 2005-06-07 |