Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6835242 | Conditioning of organic pigments | Klaus Kund, Erwin Dietz, Joachim Weber, Olaf Schupp | 2004-12-28 |
| 6723138 | Preparation of diketopyrrolopyrrole pigments | Leonhard Unverdorben, Joachim Weber, Erwin Dietz, Juergen Patzlaff | 2004-04-20 |