Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8002888 | Phenylpyrazolone colorant | Arpad Acs, Till Borchert, Steffen Schneider | 2011-08-23 |
| 7824488 | Pigment composition based on C.I. pigment yellow 191 | Till Borchert, Martin Schmidt, Arpad Acs | 2010-11-02 |
| 7419541 | Monoazo pigment preparations based on C.I. Pigment Yellow 74 | Felix Grimm, Bernd Nestler, Joerg Schueller, Wojciech Nieradzik, Werner Sindermann +1 more | 2008-09-02 |
| 6504045 | Crystal polymorphs of a yellow disazo colorant, and their preparation | Hans Joachim Metz, Joachim Weber, Martin Schmidt, Olaf Schupp, Andreas Wacker | 2003-01-07 |
| 5559216 | Single-step process for the preparation of bis-(acetoacetylamino) benzene disazo pigments | Joachim Weide, Hans Joachim Metz | 1996-09-24 |
| 5352281 | Use of azo pigment preparations for solvent-containing packaging intaglio and flexographic printing inks | Joachim Weide, Hans Joachim Metz, Rainer Winter | 1994-10-04 |