Issued Patents All Time
Showing 25 most recent of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5705683 | Carbonylation of olefins | Ferdinand Lippert, Arthur Hohn, Martin Schäfer | 1998-01-06 |
| 5401873 | Preparation of methyl formate | Peter Zehner, Klaus Bittins, Wilhelm Haarde, Ulrich Eiden, Dietrich Wolff +1 more | 1995-03-28 |
| 5294740 | Preparation of formic acid by thermal cleavage of quaternary ammonium formates | Hans Kiefer, Ferdinand Lippert | 1994-03-15 |
| 5225602 | Phenylacetaldehydes and the preparation of phenylacetaldehydes | Wolfgang Hoelderich, Norbert Goetz, Rudolf Kropp, Hans Theobald, Bernd Wolf | 1993-07-06 |
| 5200560 | Preparation of carboxylic chlorides | Thomas-Michael Kahl, Jochem Henkelmann, Wolfgang Franzischka, Wolfgang Schwarz | 1993-04-06 |
| 5200163 | Removal of phosgene from off-gases | Jochem Henkelmann, Thomas-Michael Kahl, Irene Troetsch-Schaller, Wolfgang Franzischka, Wolfgang Schwarz | 1993-04-06 |
| 5196611 | Preparation of alkyl, alkenyl, and alkynyl chlorides | Jochem Henkelmann, Irene Troetsch-Schaller, Thomas Wettling, Thomas-Michael Kahl, Wolfgang Franzischka +1 more | 1993-03-23 |
| 5149861 | Recovery of trialkylamines and methyl formate from mixtures obtained in the preparation of trimethylolalkanes | Franz Merger, Peter Hettinger, Juergen Paetsch, Heribert Deck, Heinz Auer +1 more | 1992-09-22 |
| 5130435 | Preparation of vinyl ethers | Wolfgang Hoelderich, Norbert Goetz | 1992-07-14 |
| 5000832 | Purification of aqueous glyoxal solutions | Michael Steiniger, Hartwig Voss | 1991-03-19 |
| 4990684 | Preparation of phenylacetaldehydes | Wolfgang Hoelderich, Norbert Goetz | 1991-02-05 |
| 4980511 | Preparation of aldehydes and/or ketones BU conversion of epoxides | Wolfgang Hoelderich, Norbert Goetz, Helmut Lermer | 1990-12-25 |
| 4968831 | Preparation of .alpha.-ketocarboxylic esters | Norbert Goetz, Wolfgang Hoelderich | 1990-11-06 |
| 4960954 | Preparation of enol ethers | Wolfgang Hoelderich, Norbert Goetz, Walter Himmele | 1990-10-02 |
| 4943667 | Preparation of phenylethanols | Wolfgang Hoelderich, Norbert Goetz | 1990-07-24 |
| 4902828 | Recovery of aqueous glyoxylic acid solutions | Gerhard Wickenhaeuser, Bernd Heida, Fritz Graf | 1990-02-20 |
| 4891451 | Preparation of vinyl ethers | Wolfgang Hoelderich, Norbert Goetz | 1990-01-02 |
| 4885395 | Preparation of alpha, beta-unsaturated ketones | Wolfgang Hoelderich, Kurt Schneider | 1989-12-05 |
| 4874899 | Preparation of unsaturated and saturated ketones | Wolfgang Hoelderich, Kurt Schneider | 1989-10-17 |
| 4866210 | Preparation of ketones | Wolfgang Hoelderich, Kurt Schneider | 1989-09-12 |
| 4851584 | Preparation of carbonyl compounds | Fritz Graf, Harald Schultheiss | 1989-07-25 |
| 4824973 | Preparation of 4-formyltetrahydropyrans | Wolfgang Spiegler, Wolfgang Hoelderich, Norbert Goetz, Jochen Wild | 1989-04-25 |
| 4814513 | Preparation of carbonyl compounds | Fritz Graf, Heinz Engelbach, Harald Schultheiss, Michael Jolyon Sprague | 1989-03-21 |
| 4812593 | Preparation of bifunctional compounds | Wolfgang Hoelderich, Norbert Goetz | 1989-03-14 |
| 4769200 | Compounding crystalline organic materials | Juergen Paetsch, Johann Hotz, Heino Thiele, Hans D. Zettler | 1988-09-06 |