Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5811575 | Process for preparing vinyl-phosphonic acids | Hans-Jerg Kleiner | 1998-09-22 |
| 5744010 | Process for the preparation of the non-toxic salts of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide and arrangement for carrying out this process | Heinz Litterer, Axel Engelmann, Wolf-Dietmar Kaufmann, Bernd Laugwitz, Hans-Dietmar Schnabel | 1998-04-28 |
| 5710330 | Process for preparing alkanephosphonic anhydrides | Carl Christoph Mollenkopf, Ernst I. Leupold | 1998-01-20 |
| 5475128 | Process for preparing dialkyl vinylphosphonates | Wolf-Dietmar Kaufmann, Bernd Laugwitz | 1995-12-12 |
| 5391815 | Method of separating vinylphosphonic acid from crude mixtures | — | 1995-02-21 |
| 5319138 | Process for the preparation of pure propanephosphonic anhydride | Hans-Jerg Kleiner, Harald Berger, Manfred Schmidt, Rainer Uhmann, Dirk Bottger | 1994-06-07 |
| 5292931 | Carrier catalyst, process for its preparation, and its use for the preparation of vinyl acetate | Peter Wirtz, Karl-Fred Worner, Friedrich Wunder, Klaus Eichler, Ioan Nicolau | 1994-03-08 |
| 5250487 | Carrier catalyst, process for its preparation, and its use for the preparation of vinyl acetate | Peter Wirtz, Karl-Fred Worner, Friedrich Wunder, Klaus Fichler, Ioan Nicolau | 1993-10-05 |
| 5225388 | Method for making a catalyst | Friedrich Wunder, Peter Wirtz, Klaus Eichler | 1993-07-06 |
| 5210259 | Process for the oxidation of dialkyl esters of 2-hydroxy-ethylphosphonic acid | Ernst I. Leupold | 1993-05-11 |
| 5066365 | Process for the isolation of vinyl acetate by distillation | Karl-Heinz Schmidt, Klaus Eichler, Peter Horstermann, Reinhard Gradl, Horst Langner | 1991-11-19 |
| 4960919 | Process for the preparation of alkyl alkenylphosphinates | Hans-Jerg Kleiner | 1990-10-02 |
| 4902823 | Process for the preparation of vinyl acetate | Friedrich Wunder, Klaus Eichler | 1990-02-20 |
| 4894470 | Process for the preparation of dialkyl vinylphosphonates | Hans-Jerg Kleiner, Gabriele Ihl, Hermann Leipe | 1990-01-16 |
| 4818347 | Process for the isolation of vinyl acetate | Karl-Heinz Schmidt, Hansjorg Hey, Horst Langner, Erwin Andereya | 1989-04-04 |
| 4409396 | Process for the manufacture of unsaturated carboxylic acid esters | Dominik Dempf, Ludwig Schmidhammer, Gerhard Dummer, Karl-Heinz Schmidt, Ernst Selbertinger +1 more | 1983-10-11 |
| 4380663 | Process for the preparation of practically formic acid-free acetic acid | Helmut Schaum, Heinz Schmitz | 1983-04-19 |
| 4370492 | Preparation of vinyl acetate from ethylene, acetic acid and oxygen in the gaseous phase | Friedrich Wunder, Therese Quadflieg, Gunther Heck | 1983-01-25 |
| 4370261 | Carrier catalyst for the preparation of vinyl acetate from ethylene, acetic acid and oxygen in the gaseous phase | Friedrich Wunder, Therese Quadflieg, Gunther Heck | 1983-01-25 |
| 4353783 | Process for separating water from mixtures thereof with vinyl acetate and acetic acid | Karl-Heinz Schmidt, Horst Langner, Hermann Neu, Aladar Lienerth, Dominik Dempf +1 more | 1982-10-12 |
| 4229261 | Process for separating water from organic multiple component mixtures by distillation | Gunter Heck, Rudolf Donth | 1980-10-21 |
| 4219500 | Process for the manufacture of N,N'-diacetylethylene diamine | Wilfried Pressler | 1980-08-26 |