Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6786709 | Gear pump with a drive and a hydraulic tank | Harald Klahm | 2004-09-07 |
| 6602342 | Crystal polymorphs of C.I. Pigment Yellow 191 and their preparation | Martin Schmidt, Arpad Acs, Franz Schui | 2003-08-05 |
| 6479569 | Safer pigment preparations | Klaus Saitmacher, Arpad Acs | 2002-11-12 |
| 6469147 | Preparation of azo colorants in microreactors | Uwe Nickel, Klaus Saitmacher, Leonhard Unverdorben | 2002-10-22 |
| 6358308 | Finishing treatment of pigments in liquid or supercritical CO2 | Klaus Kund, Bernd Nestler, Martin Schmidt, Leonhard Unverdorben, Rudolf Steiner | 2002-03-19 |
| 5716446 | Isoindoline pigments based on aminoquinoxalinediones | Frank Alfter, Gustav Kapaun | 1998-02-10 |
| 5699714 | Adjusting switching device | Harald Bar | 1997-12-23 |
| 5493011 | Monoazo or disazo pigments based on (benoxazol-2-yl)- or (benzimidazol-2-yl)-arylacetamides | Reinhold Deubel | 1996-02-20 |
| 5428136 | Water-insoluble azo colorants having two azo groups and a 1,4-bis (acetoacetylamino) benzene coupling component | Joachim Weide, Hans Joachim Metz | 1995-06-27 |
| 5373865 | Non-leaking storage charging valve | Harald Bar | 1994-12-20 |
| 5026831 | Water-insoluble disazo colorants having hetero-bicyclic methylene-active compounds as coupling component | Reinhold Deubel | 1991-06-25 |
| 5004006 | Two-way flow valve | — | 1991-04-02 |