Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5856516 | Process for the preparation of carbazole | Hans-Josef Buysch, Ulrich Notheis, Alexander Klausener | 1999-01-05 |
| 5808157 | Process for producing aromatic amines | Hans-Josef Buysch, Paul Wagner, Ursula Pentling | 1998-09-15 |
| 5786521 | Process for preparing hydroxymethylcyclopropane | Gerhard Darsow, Lutz Frohn | 1998-07-28 |
| 5728896 | Process for the preparation of hydroxymethyl-cyclopropane | Lutz Frohn, Gerhard Darsow, Eberhard Zirngiebl, Jorg-Dietrich Jentsch, Bernd Pennemann +1 more | 1998-03-17 |
| 5679858 | Process for the manufacture of aromatic amines by gas-phase hydrogenation and catalyst useful thereof | Hans-Josef Buysch, Ursula Pentling | 1997-10-21 |
| 5585471 | Method for preparing a mixture of .alpha.- and .beta.-chloroethyl-glucopyranose | Klaus Szablikowski, Martin Lohrie, Wolfgang Koch, Hans-Josef Buysch | 1996-12-17 |
| 5583251 | Process for the production of isocyanates and for the production of light-colored foams therefrom | Hans-Josef Buysch, Manfred Gallus, Herbert Gebauer, Otto Immel, Christine Mendoza-Frohn | 1996-12-10 |
| 5484576 | Fixed bed reactors having a short catalyst bed in the direction of flow | Hans-Josef Buysch, Paul Wagner | 1996-01-16 |
| 5449806 | Process for the preparation of dialkyl carbonates | Alexander Klausener, Heinz Landscheidt, Paul Wagner | 1995-09-12 |
| 5359118 | Process for the continuous preparation of dialkyl carbonates | Paul Wagner, Franz-Josef Mais, Hans-Josef Buysch, Alexander Klausener | 1994-10-25 |
| 5344954 | Process for the preparation of diaryl carbonates | Norbert Schon, Hans-Josef Buysch, Paul Wagner | 1994-09-06 |
| 5334742 | Process for the continuous preparation of diaryl carbonates from dialkyl carbonates | Norbert Schon, Hans-Josef Buysch, Paul Wagner | 1994-08-02 |
| 5298659 | Method for the preparation of azomethines | Hans-Josef Buysch, Paul Wagner | 1994-03-29 |
| 5292953 | Process for the preparation of azomethines | Hans-Josef Buysch, Paul Wagner | 1994-03-08 |
| 5258554 | Process for monobenzylation of p-substituted phenols | Hans-Josef Buysch | 1993-11-02 |
| 5231212 | Process for the continuous preparation of dialkyl carbonates | Hans-Josef Buysch, Alexander Klausener, Franz-Josef Mais | 1993-07-27 |
| 5196592 | Process for the preparation of diphenylamines | Otto Immel, Helmut Waldmann, Gerhard Darsow, Hans-Josef Buysch | 1993-03-23 |