Issued Patents All Time
Showing 1–25 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7102014 | Pigment dispersants based on diketopyrrolopyrrole compounds and pigment preparations | Joachim Weber, Felix Grimm | 2006-09-05 |
| 7056378 | Method for producing vattable organic pigments | Joachim Weber, Manfred Urban | 2006-06-06 |
| 7045637 | Pigment dispersants based on diketopyrrolopyrrole compounds and pigment preparations | Joachim Weber, Felix Grimm | 2006-05-16 |
| 7045638 | Pigment dispersants based on diketopyrrolopyrrole compounds and pigment preparations | Joachim Weber, Felix Grimm | 2006-05-16 |
| 6918958 | Acid pigment dispersants and pigment preparations | Joachim Weber, Gerhard Wilker, Klaus Brychcy | 2005-07-19 |
| 6835242 | Conditioning of organic pigments | Uwe Nickel, Klaus Kund, Joachim Weber, Olaf Schupp | 2004-12-28 |
| 6723138 | Preparation of diketopyrrolopyrrole pigments | Uwe Nickel, Leonhard Unverdorben, Joachim Weber, Juergen Patzlaff | 2004-04-20 |
| 6646126 | Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment form | Joachim Weber, Gerhard Wilker, Manfred Urban, Martin Bohmer | 2003-11-11 |
| 6616859 | Preparation of alcoholic solutions of alkali metal alkoxides | Uwe Nickel, Leonhard Unverdorben, Joachim Weber, Juergen Patzlaff | 2003-09-09 |
| 6582508 | Process for fine division of organic pigments | Joachim Weber, Dieter Schnaitmann, Christian Wille, Leonhard Unverdorben | 2003-06-24 |
| 6566519 | Preparation of diketopyrrolopyrrole pigments | Uwe Nickel, Leonhard Unverdorben, Joachim Weber, Juergen Patzlaff | 2003-05-20 |
| 6562121 | Conditioning of organic pigments | Uwe Nickel, Klaus Kund, Joachim Weber, Olaf Schupp | 2003-05-13 |
| 6548647 | Process for preparing azo colorants | Joachim Weber, Dieter Schnaitmann, Christian Wille, Leonhard Unverdorben, Klaus Saitmacher +2 more | 2003-04-15 |
| 6537364 | Process for fine division of organic pigments by precipitation | Joachim Weber, Dieter Schnaitmann, Christian Wille, Leonhard Unverdorben, Klaus Brychcy | 2003-03-25 |
| 6521756 | Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment form | Joachim Weber, Gerhard Wilker, Manfred Urban, Martin Bohmer | 2003-02-18 |
| 6413309 | Pigment preparations comprising two or more perylene compounds | Joachim Weber, Manfred Urban, Manfred Opravil | 2002-07-02 |
| 6409816 | Pigment preparations based on diketopyrrolopyrrole pigments with basic perylene dispersants | Joachim Weber | 2002-06-25 |
| 6221150 | Perylene compounds and pigment preparations | Joachim Weber, Manfred Urban | 2001-04-24 |
| 6017984 | Colored cholesteric liquid-crystal polymers having optically variable properties | Axel Schonfeld, Bernd Dewald | 2000-01-25 |
| 5837160 | Chiral CLCPs containing colored monomers | Axel Schonfeld | 1998-11-17 |
| 5834072 | Powder coatings whose perceived color depends on the viewing angle | Axel Schonfeld | 1998-11-10 |
| 5834064 | Effect coatings whose perceived color depends on the viewing angle | Axel Schonfeld, Willi Kreuder | 1998-11-10 |
| 5747175 | LCP blends | Axel Schonfeld | 1998-05-05 |
| 5698705 | Isoindoline pigments | Frank Alfter, Gustav Kapaun, Siegfried Schiessler | 1997-12-16 |
| 5662739 | Use of fatty acid taurides for the dispersion of polycyclic pigments | Manfred Urban | 1997-09-02 |