Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7511176 | Process for the preparation of toluenediamines by catalytic hydrogenation of dinitrotoluenes | Fritz Pohl, Wolfgang Lorenz, Lars Padeken, Bernd Pennemann, Friedhelm Steffens | 2009-03-31 |
| 7495136 | Process for the production of dinitrotoluene | Fritz Pohl, Wolfgang Lorenz, Juergen Muennig, Bernd Pennemann | 2009-02-24 |
| 6258986 | Process for the production of dinitrotoluene | Uwe Klingler, Thomas Schieb, Dietmar Wastian, Jurgen Zimmerman | 2001-07-10 |
| 5696305 | Process for the production of nitroaromatic compounds | Uwe Klingler, Thomas Schieb, Jurgen Zimmermann | 1997-12-09 |
| 5689018 | Process for the production of dinitrotoluene | Uwe Klingler, Thomas Schieb, Jurgen Zimmermann | 1997-11-18 |
| 5679873 | Process for the production of dinitrotoluene | Uwe Klingler, Thomas Schieb, Jurgen Zimmermann | 1997-10-21 |
| 5663462 | Process for the production of dinitrotoluene and isomeric mixtures of dinitrotoluene | Uwe Klingler, Thomas Schieb | 1997-09-02 |
| 5616818 | Process for the polynitration of aromatic compounds | Hans-Georg Pirkl, Reinhard Schom acker, Uwe Klingler, Thomas Schieb, J urgen Zimmermann | 1997-04-01 |
| 5395995 | Process for the preparation and purification of nitroaromatics | Dieter Grenner, Thomas Schieb | 1995-03-07 |
| 5345012 | Process for the preparation of dinitrotoluene | Thomas Schieb, Rudolf Sundermann, Uwe J. Zarnack | 1994-09-06 |