Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6649758 | Preparation of trans-thiazineindigo pigments | Petra Rothe, Bruno Piastra | 2003-11-18 |
| 6616859 | Preparation of alcoholic solutions of alkali metal alkoxides | Uwe Nickel, Joachim Weber, Erwin Dietz, Juergen Patzlaff | 2003-09-09 |
| 6582508 | Process for fine division of organic pigments | Erwin Dietz, Joachim Weber, Dieter Schnaitmann, Christian Wille | 2003-06-24 |
| 6566519 | Preparation of diketopyrrolopyrrole pigments | Uwe Nickel, Joachim Weber, Erwin Dietz, Juergen Patzlaff | 2003-05-20 |
| 6548647 | Process for preparing azo colorants | Erwin Dietz, Joachim Weber, Dieter Schnaitmann, Christian Wille, Klaus Saitmacher +2 more | 2003-04-15 |
| 6537364 | Process for fine division of organic pigments by precipitation | Erwin Dietz, Joachim Weber, Dieter Schnaitmann, Christian Wille, Klaus Brychcy | 2003-03-25 |