Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7999086 | Method of conditioning azo pigments containing carboxylic ester groups | Jens Paetzold, Carsten Plueg | 2011-08-16 |
| 7855041 | Pigment preparation based on an azo pigment | Joachim Weber, Patrick Hoetzel, Karl-Heinz Schweikart | 2010-12-21 |
| 7311769 | Pigment compositions consisting of a yellow disazo pigment and an organic pigment | Joachim Weber, Gerhard Wilker, Hans-Tobias Macholdt | 2007-12-25 |
| 6437104 | Preparation of disazo condensation pigments in microreactors | Uwe Nickel, Klaus Kund | 2002-08-20 |
| 5716446 | Isoindoline pigments based on aminoquinoxalinediones | Rudiger Jung, Gustav Kapaun | 1998-02-10 |
| 5698705 | Isoindoline pigments | Erwin Dietz, Gustav Kapaun, Siegfried Schiessler | 1997-12-16 |