| 8623579 |
Easily dispersible pigment preparation based on C.I. pigment yellow 155 |
Jesús Pitarch López, Ulrike Rohr, Kristin Richter, Eusebio Ruiz Fernandez |
2014-01-07 |
| 7621967 |
Blue dye with particularly high purity and positive triboelectric control effect |
Eduard Michel, Hans-Tobias Macholdt, Norbert Kohl |
2009-11-24 |
| 7611812 |
Use of salts of layered double hydroxides as charge control agents |
Eduard Michel, Hans-Tobias Macholdt |
2009-11-03 |
| 7569318 |
Use of salts of layered double hydoxides |
Eduard Michel, Hans-Tobias Macholdt |
2009-08-04 |
| 7309389 |
Preparation of azo colorants in microreactors and their use in electrophotographic toners and developers, powder coatings, ink jet inks and electronic medias |
Hans-Tobias Macholdt, Uwe Nickel, Leonhard Unverdorben, Christian Wille |
2007-12-18 |
| 7135266 |
Preparation of azo colorants in microreactors and their use in electrophotographic toners and developers, powder coatings, ink jet inks and electronic medias |
Hans-Tobias Macholdt, Uwe Nickel, Leonhard Unverdorben, Christian Wille |
2006-11-14 |
| 7029818 |
Use of coated pigment granules in electrophotographic toners and developers, powder coatings and inkjet inks |
Ulrike Rohr, Hans Joachim Metz, Andreas Stohr |
2006-04-18 |
| 7008475 |
Water-based colorant preparations |
Rudolf Randler, Ulrike Rohr, Josef Geisenberger, Hans-Tobias Macholdt, Heidemarie Menzel |
2006-03-07 |
| 6406528 |
Use of improved cyan pigments in inkjet inks |
Hans-Tobias Macholdt, Eduard Michel, Josef Geisenberger, Heidemarie Menzel, Andreas Harz |
2002-06-18 |
| 6391507 |
Cyan pigments in electrophotographic toners and developers |
Hans-Tobias Macholdt, Eduard Michel, Josef Geisenberger, Heidemarie Menzel, Andreas Harz |
2002-05-21 |
| 6251553 |
Use of mixed-crystal pigments of the quinacridone series in electrophotographic toners and developers, powder coatings and inkjet inks |
Manfred Urban, Hans-Tobias Macholdt, Dieter Schnaitmann, Martin Boehmer |
2001-06-26 |
| 6207335 |
Use of metal carboxylates and sulfonates as charge control agents |
Eduard Michel, Hans-Tobias Macholdt |
2001-03-27 |
| 6143455 |
Use of aluminum azo complex dyes as charge control agents |
Hans-Tobias Macholdt |
2000-11-07 |
| 6117606 |
Use of pigment yellow 155 in electrophotographic toners and developers, powder coatings and inkjet inks |
Hans-Tobias Macholdt, Josef Ritter |
2000-09-12 |
| 6030738 |
Use of inter-polyelectrolyte complexes as charge control agents |
Eduard Michel, Hans-Tobias Macholdt |
2000-02-29 |