Issued Patents All Time
Showing 26–50 of 64 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7731761 | Polymeric hair dyes | Sophie Marquais-Bienewald, Christian Cremer, Beate Fröhling, Andreas Möck | 2010-06-08 |
| 7731760 | Oxazine disulfide dyes | Christian Cremer | 2010-06-08 |
| 7686850 | Nitrosulfide dyes | Christian Cremer | 2010-03-30 |
| 7550016 | Sulfide dyes | Christian Cremer | 2009-06-23 |
| 7417154 | Heat-stable diketopyrrolopyrrole pigment mixtures | Roman Lenz, Leonhard Feiler, Mathias Düggeli, Taher Yousaf, Gerardus De Keyzer | 2008-08-26 |
| 7279514 | High-molecular-weight polymeric material comprising diketopyrrolopyrrole pigments | Roman Lenz, Gerardus De Keyzer, Taher Yousaf | 2007-10-09 |
| 7081540 | Pigment compositions and pigmented water-based coating materials | Roman Lenz | 2006-07-25 |
| 7063806 | Fluorescent diketopyrrolopyrroles | Hiroshi Yamamoto, Norihisa Dan | 2006-06-20 |
| 6872839 | Benzofuran-2-one | Leonhard Feiler, Thomas Ruch, Peter Nesvadba | 2005-03-29 |
| 6756487 | Monoazoquinolone pigments, process for their preparation and their use | Johannes Benkhoff, Tetsuo Hyuga, Gerardus De Keyzer | 2004-06-29 |
| 6616750 | Ternary pigment compositions | Roman Lenz, Ingo Schloder | 2003-09-09 |
| 6066202 | Diketopyrrolopyrrole compositions | Ingo Schloder | 2000-05-23 |
| 5973146 | Process for the preparation of aminated diketobis (aryl or heteroaryl)pyrrolopyrroles and the use thereof as photoconductive substances | Alain C. Rochat, Abul Iqbal, Jin Mizuguchi | 1999-10-26 |
| 5914426 | Process for the preparation of di-tert-butyl succinate | Martin Kudschus | 1999-06-22 |
| 5874588 | Process for the preparation of diketopyrrolopyrrolecarboxylic acids and their esters and amides | Bernd Lamatsch | 1999-02-23 |
| 5871575 | Crystal modification of a diketopyrrolopyrrole pigment | Thomas Ruch | 1999-02-16 |
| 5821373 | Solid sloutions of 1,4-diketopyrrolopyrroles | Zhimin Hao | 1998-10-13 |
| 5817832 | Blue diketopyrrolopyrrole pigments | Bernd Lamatsch, Thomas Ruch | 1998-10-06 |
| 5808094 | Preparation of mixed crystals and solid solutions of 1,4-diketopyrrolopyrroles | Jin Mizuguchi, Zhimin Hao, Abul Iqbal | 1998-09-15 |
| 5738719 | Pigment compositions of diketopyrrolopyrroles | Ingo Schloder, Gary Wooden | 1998-04-14 |
| 5708188 | Mixed crystals and solid solution of 1,4-diketopyrrolopyrroles | Zhimin Hao, Abul Iqbal, Bernhard Medinger | 1998-01-13 |
| 5693824 | Preparation of mixed crystals and solid solutions of 1, 4-diketo-pyrrolpyrroles | Jin Mizuguchi, Zhimin Hao, Abul Iqbal | 1997-12-02 |
| 5672716 | Yellow diketopyrrolopyrrole pigments | Bernd Lamatsch, Ingo Schloder | 1997-09-30 |
| 5502208 | Finely particulate cyano-substituted diketopyrrolopyrrole pigments and the preparation thereof | — | 1996-03-26 |
| 5492564 | Diketopyrrolopyrrole pigment with high chroma | Gary Wooden, Ingo Schloder | 1996-02-20 |