Issued Patents All Time
Showing 1–25 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8182598 | Violet colorant for colour filters, inks for ink-jet electrophotographic toners and developers and e-inks | Heino Heckmann, Magali Meder | 2012-05-22 |
| 7621967 | Blue dye with particularly high purity and positive triboelectric control effect | Eduard Michel, Ruediger Baur, Norbert Kohl | 2009-11-24 |
| 7611812 | Use of salts of layered double hydroxides as charge control agents | Eduard Michel, Ruediger Baur | 2009-11-03 |
| 7569318 | Use of salts of layered double hydoxides | Eduard Michel, Ruediger Baur | 2009-08-04 |
| 7387670 | Pigment preparations based on phthalocyanine pigments | Joachim Weber, Manfred Opravil, Magali Meder | 2008-06-17 |
| 7311769 | Pigment compositions consisting of a yellow disazo pigment and an organic pigment | Joachim Weber, Gerhard Wilker, Frank Alfter | 2007-12-25 |
| 7309389 | Preparation of azo colorants in microreactors and their use in electrophotographic toners and developers, powder coatings, ink jet inks and electronic medias | Ruediger Baur, Uwe Nickel, Leonhard Unverdorben, Christian Wille | 2007-12-18 |
| 7309558 | Use of salt-like structured silicas as charge control agents | Eduard Michel, Rudiger Baur | 2007-12-18 |
| 7285592 | Pigments dispersions based on water and acrylate | Andreas Harz, Heidemarie Menzel, Michael Mueller | 2007-10-23 |
| 7135266 | Preparation of azo colorants in microreactors and their use in electrophotographic toners and developers, powder coatings, ink jet inks and electronic medias | Ruediger Baur, Uwe Nickel, Leonhard Unverdorben, Christian Wille | 2006-11-14 |
| 7097699 | Composition for printing recording materials | Robert Egli, Oliver Eich, Reinhard Pedrazzi | 2006-08-29 |
| 7008475 | Water-based colorant preparations | Rudolf Randler, Ulrike Rohr, Josef Geisenberger, Ruediger Baur, Heidemarie Menzel | 2006-03-07 |
| 6506221 | Process for preparing purified dyestuffs | Dominique Pflieger | 2003-01-14 |
| 6406528 | Use of improved cyan pigments in inkjet inks | Ruediger Baur, Eduard Michel, Josef Geisenberger, Heidemarie Menzel, Andreas Harz | 2002-06-18 |
| 6391507 | Cyan pigments in electrophotographic toners and developers | Ruediger Baur, 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 | Ruediger Baur, Manfred Urban, Dieter Schnaitmann, Martin Boehmer | 2001-06-26 |
| 6207335 | Use of metal carboxylates and sulfonates as charge control agents | Eduard Michel, Ruediger Baur | 2001-03-27 |
| 6168895 | Pigment for electrophotographic toners and developers | Hans Joachim Metz, Rudiger Baur | 2001-01-02 |
| 6159649 | Electrophotographic, resin-containing, electret, or inkjet compositions containing magenta azo pigment and use thereof | Dieter Baumgart, Rudiger Baur | 2000-12-12 |
| 6143455 | Use of aluminum azo complex dyes as charge control agents | Ruediger Baur | 2000-11-07 |
| 6117606 | Use of pigment yellow 155 in electrophotographic toners and developers, powder coatings and inkjet inks | Ruediger Baur, Josef Ritter | 2000-09-12 |
| 6083653 | Cyclooligosaccharide-boron complex | Rudiger Baur | 2000-07-04 |
| 6030738 | Use of inter-polyelectrolyte complexes as charge control agents | Eduard Michel, Ruediger Baur | 2000-02-29 |
| 6028178 | Pigment for electrophotographic toners and developers | Hans Joachim Metz, Rudiger Baur | 2000-02-22 |
| 5871845 | Electret fibers having improved charge stability, process for the production thereof and textile material containing these electret fibers. | Jorg Dahringer, Werner Groh, Peter Boening | 1999-02-16 |