Issued Patents All Time
Showing 26–50 of 110 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5728900 | Process for the selective hydrogenation of butyne-1,4-diol to butene-2-diol-1,4 | Franz Josef Brocker, Volkmar Menger, Peter Stops | 1998-03-17 |
| 5719281 | Preparation of 1/3/5-Tris(2-Hydroxyalkyl) isocyanurates | Frank Gutschoven, Johann-Peter Melder, Etienne van den Brande, Thomas Krader | 1998-02-17 |
| 5679868 | Preparation of glutaric dialdehyde | Heinz-Josef Kneuper, Eugen Gehrer, Juergen Schossig, Andreas Henne | 1997-10-21 |
| 5660601 | Polyetheramine-containing fuels for gasoline engines | Knut Oppenlander, Wolfgang H. H. Gunther, Andreas Henne, Volkmar Menger, Wolfgang Reif +3 more | 1997-08-26 |
| 5641857 | Preparation of polytetrahydrofuran | Roman Dostalek, Rolf Fischer, Ulrich Mueller | 1997-06-24 |
| 5608113 | Process for preparation of diamines by catalytic amination of aminoalcohols | Volkmar Menger, Wolfgang Reif, Andreas Henne | 1997-03-04 |
| 5600018 | Preparation of glutaraldehyde | Wolfgang Friedrich, Walter Klink, Juergen Schossig, Andreas Henne | 1997-02-04 |
| 5554782 | Preparation of dicyanobenzenes by ammonoxidation | Clemens Grund, Guenther Glas, Paul Guenthert, Helmut Reichelt, Arno Lange +1 more | 1996-09-10 |
| 5530127 | Preparation of amines | Wolfgang Reif, Lothar Franz, Peter Stops, Volkmar Menger, Rudolf Kummer +1 more | 1996-06-25 |
| 5521139 | Palladium-containing fixed-bed catalyst for the hydrogenation of butyne-1,4-diol to butene-2-diol-1,2 | Franz Josef Brocker, Volkmar Menger, Peter Stops | 1996-05-28 |
| 5489663 | Preparation of polyisocyanates containing isocyanurate groups and use thereof | Peter Brandt, Bernd Bruchmann, Gerhard Laqua, Franz Merger, Andreas Otterbach +3 more | 1996-02-06 |
| 5463020 | Preparation of polytetrahydrofuran or tetrahydrofuran/alkylene oxide copolymers | Michael Huellmann, Christof Palm, Wolfgang Franzischka | 1995-10-31 |
| 5455352 | Preparation of N-(2-hydroxyethyl)-piperazine | Michael Huellmann, Emil Scharf | 1995-10-03 |
| 5359122 | Preparation of 3-arylacrylic acids and their derivatives | Michael Huellmann, Josef Gnad | 1994-10-25 |
| 5336815 | Preparation of vinyl glycols | Walter Gramlich, Michael Huellmann, Hans-Ulrich Scholz | 1994-08-09 |
| 5320833 | Arylpolyenecarboxylic acids and their derivatives as sunscreen agents in cosmetic preparations | Gabriele Deckers, Bernd Wenderoth, Norbert Goetz, Karin Sperling-Vietmeier | 1994-06-14 |
| 5237113 | Preparation of haloalcohols | Wolfgang Mackenroth, Walter Seufert | 1993-08-17 |
| 5207816 | Cyclohexenone derivatives and their use for controlling undesirable plant growth | Dieter Jahn, Michael Keil, Hans Theobald, Wolfgang Spiegler, Bruno Wuerzer | 1993-05-04 |
| 5177222 | 1,1-dialkoxy-2-oxo-6-aryl-3,5-alkadienes | Helmut Guembel, Joachim Paust, Karin Sperling-Vietmeier | 1993-01-05 |
| 5169426 | Cyclohexenone derivatives, their preparation and their use for controlling undesirable plant growth | Dieter Jahn, Michael Keil, Ulrich Schirmer, Bruno Wuerzer, Norbert Meyer | 1992-12-08 |
| 5166286 | Polymers having terminal halogen atoms | Dietmar Bender, Klaus Bronstert | 1992-11-24 |
| 5163994 | Crop protection agent containing an active ingredient | Roger Klimesch, Adolf Parg, Axel Sanner, Winfried Angerer, Hans Theobald +3 more | 1992-11-17 |
| 5154753 | Cyclohexenone derivatives, their preparation and their use as herbicides and plant growth regulators | Norbert Meyer, Johann Jung, Wilhelm Rademacher, Dieter Kolassa, Dieter Jahn +3 more | 1992-10-13 |
| 5120880 | Preparation of muscone, intermediates for this preparation and preparation of said intermediates | Michael Huellmann, Thomas Kuekenhoehner, Karl Brenner, Matthias Irgang, Charles Schommer | 1992-06-09 |
| RE33820 | Preparation of alkoxy maleic anhydrides | Wolfgang Rohr | 1992-02-11 |