Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7468158 | Corrosion inhibitor for protecting metallic materials in strongly alkaline medium | Lutz Heuer, Stylianos Savakis, Helmut Diekmann | 2008-12-23 |
| 6794549 | Continuous adiabatic process for nitrating chlorobenzene | Ralf Demuth, Matthias Gotta, Thomas Linn, Hans-Martin Weber | 2004-09-21 |
| 6768032 | Continuous isothermal process for preparing mononitrotoluenes in the presence of phosphoric acid | Matthias Gotta, Ralf Demuth, Hans-Martin Weber, Georg Ronge | 2004-07-27 |
| 6586645 | Continuous adiabatic process for preparing nitrochlorobenzene | Ralf Demuth, Bernd-Michael Konig, Thomas Linn, Hans-Joachim Raatz, Hans-Martin Weber +1 more | 2003-07-01 |
| 6583327 | Continuous isothermal process for preparing mononitrotoluenes | Ralf Demuth, Frank Dobert, Harald Petersen, Georg Ronge, Hans-Martin Weber +1 more | 2003-06-24 |
| 6548445 | Supported catalysts containing a platinum metal and process for preparing diaryl carbonates | Hans-Josef Buysch, Carsten Hesse, Jorg-Dietrich Jentsch, Johann Rechner | 2003-04-15 |
| 6509510 | Method for hydrogenating aromatic polymers in the presence of special catalysts | Volker Wege, Johann Rechner | 2003-01-21 |
| 6420491 | Method for hydrogenating aromatic polymers in the presence of hydrocarbons which contain oxygen | Volker Wege, Johann Rechner | 2002-07-16 |
| 6353142 | Process for the adiabatic preparation of 3,4-dichloronitrobenzene | Bernd-Michael Konig, Hans-Martin Weber, Thomas Linn, Hans-Joachim Raatz | 2002-03-05 |
| 6001768 | Supported catalysts containing a platinum metal and process for preparing diaryl carbonates | Hans-Josef Buysch, Carsten Hesse, Jorg-Dietrich Jentsch, Johann Rechner | 1999-12-14 |
| 5912358 | Process for preparing 2-pyrrolidones | Lutz Frohn, Jorg-Dietrich Jentsch | 1999-06-15 |
| 5886232 | Process for preparing substituted cyclohexanones | Heinz Landscheidt, Alexander Klausener, Wolfgang Kiel | 1999-03-23 |
| 5760247 | Process for the preparation of carbazole | Albert Schnatterer, Helmut Fiege, Joerg-Dietrich Jentsch | 1998-06-02 |
| 5728896 | Process for the preparation of hydroxymethyl-cyclopropane | Lutz Frohn, Reinhard Langer, Gerhard Darsow, Jorg-Dietrich Jentsch, Bernd Pennemann +1 more | 1998-03-17 |
| 5663443 | Ruthenium catalysts, their preparation and a process for preparing cycloaliphatic polyamines using these catalysts | Wolfgang Kiel, Joerg-Dietrich Jentsch | 1997-09-02 |
| 5648500 | Process for the preparation of substituted 1,2,3,4-tetrahydrocarbazoles | Heinz Landscheidt, Alexander Klausener, Jorg-Dietrich Jentsch | 1997-07-15 |
| 5616730 | Process for preparing succinic anhydride | Joerg-Dietrich Jentsch, Georg Martin | 1997-04-01 |
| 5593936 | Hydrated niobium oxide and hydrated tantalum oxide catalysts, their preparation and a process for preparing N-alkylated anilines using these catalysts | Volker Glock, Ursula Pentling, Bernd Pennemann, Joerg-Dietrich Jentsch, Horst Koller | 1997-01-14 |
| 5476959 | Process for the preparation of dialkyl carbonates | Konrad Hable, Alexander Klausener, Zoltan Kricsfalussy, Heinz Landscheidt, Erich Wolters | 1995-12-19 |
| 5414104 | Process for preparing dialkyl carbonates | Joerg-Dietrich Jentsch, Alexander Klausener, Heinz Landscheidt, Erich Wolters | 1995-05-09 |
| 5410085 | Process for the preparation of chlorine-substituted aromatic amines and of catalysts | Udo Birkenstock, Walter Kipshagen, Herbert Schmidt, Thomas Schulz | 1995-04-25 |
| 5354923 | Process for the preparation of aromatic carbonic diesters | Norbert Schon, Hans-Josef Buysch, Jurgen Kischkewitz | 1994-10-11 |
| 5173466 | Catalyst for the reduction of nitrogen oxides from waste gases and a process for its production | Hans-Hermann Heins, Peter Danz, Martin Ullrich, Hanno Henkel, Klaus Holzer +1 more | 1992-12-22 |
| 4952624 | Polyarylene sulfide mixtures with reduced radical formation under highly accelerated weathering | Burkhard Kohler, Gerhard Heywang | 1990-08-28 |