Issued Patents All Time
Showing 1–25 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6140428 | Simultaneous production of dicarboxylic acids and diamines by splitting polyamides into their monomeric constituents | Ursula Seeliger, Wolfgang Mueller, Frank Heimann, Guenther Huber, Wolfgang Habermann +1 more | 2000-10-31 |
| 6013803 | Sterically hindered 4-amino-piperidine with a low dimer content, its production and use | Manfred Julius, Harald Rust, Alfred Krause, Wolfgang Siegel, Tom Witzel | 2000-01-11 |
| 6011157 | Process for purifying sterically hindered 4-amino piperidines | Manfred Julius, Harald Rust, Alfred Krause, Wolfgang Siegel, Tom Witzel | 2000-01-04 |
| 5928912 | Process for the hydroxylation of aromatic acids using strains of the fungus Beauveria | Wolfgang Ladner, Horst Ralf Staudenmaier, Bernhard Hauer, Ursula Mueller, Uwe Pressler +1 more | 1999-07-27 |
| 5892121 | Purification of tertiary phosphine oxides | Dieter Hermeling, Randolf Hugo | 1999-04-06 |
| 5856494 | Preparation of 2, 2, 6, 6-tetramethylpiperidin-4-one (TAA) | Manfred Julius, Dieter Hermeling, Wolfgang Harder | 1999-01-05 |
| 5543515 | Preparation of tertiary amine oxides | Ulrich Koehler, Guenther Seybold | 1996-08-06 |
| 5536854 | Preparation of 2-methyl-1,4-butanediol and 3-methyltetrahydrofuran | Hans-Juergen Weyer, Rolf Fischer, Franz Merger, Juergen Frank, Jochem Henkelmann +1 more | 1996-07-16 |
| 5527966 | Preparation of triphenylphosphine | Dieter Hermeling, Peter Bassler, Peter Hammes, Randolf Hugo, Peter Lechtken | 1996-06-18 |
| 5496958 | Preparation of 5-vinylpyrrolidones | Rolf Fischer, Werner Hoffmann, Ernst Langguth | 1996-03-05 |
| 5359082 | Preparation of 4-substituted imidazoles from N-formyl-.alpha.-aminonitrile | Ulrich Koehler, Thomas-Michael Kahl, Horst Neuhauser, Michael Kroener | 1994-10-25 |
| 5296363 | Preparation of 2-(4-hydroxyphenoxy)propionic acid by fermentation | Bryan Cooper, Wolgang Ladner, Bernhard Hauer | 1994-03-22 |
| 5254711 | Continuous preparation of 3-cyano-3,5,5-trimethylcyclohexanone | Hans J. Pander, Otto Woerz | 1993-10-19 |
| 5254738 | Preparation of 1,4-alkylenediamines | Ulrich Koehler, Matthias Irgang | 1993-10-19 |
| 5231231 | Process for preparing a poly(1,4-butanediol-.omega.,.omega.'-bismercaptan) | Ulrich Koehler, Eckhard Hickmann | 1993-07-27 |
| 5208333 | (2R)-1-(aryloxy)-3-(butyryloxy)-2-propanols | Axel Paul, Wolfgang Ladner | 1993-05-04 |
| 5196571 | Preparation of unsaturated monoesters | Wolfgang Hoelderich | 1993-03-23 |
| 5136089 | Acylation of alkyl aromatic hydrocarbons | Jochem Henkelmann | 1992-08-04 |
| 5132427 | Process for the preparation of amines | Ulrich Koehler, Peter Jaeger, Matthias Irgang | 1992-07-21 |
| 5130454 | Polytetrahydrofuran derivatives having terminal aromatic groups | Eckhard Hickmann, Ulrich Koehler | 1992-07-14 |
| 5118685 | Aminopropanol derivatives of substituted 2-hydroxy-propiophenones, and therapeutic agents containing these compounds | Albrecht Franke, Wolfgang Spiegler, Claus Mueller, Gerda von Philipsborn, Dieter Lenke +1 more | 1992-06-02 |
| 5101045 | Preparation of N-substituted pyrrolidones | Ulrich Koehler | 1992-03-31 |
| 4967013 | Preparation of hydroxybenzaldehydes | Werner Steck, Helmut Lermer, Harald Rust, Gerhard Fritz | 1990-10-30 |
| 4962231 | Preparation of D- or L-alanine or high enantiomeric purity | Axel Paul, Peter Tonne, Eckhard Roske | 1990-10-09 |
| 4914133 | Amino compounds and fungicides containing them | Walter Himmele, Hubert Sauter, Eberhard Ammermann, Ernst-Heinrich Pommer | 1990-04-03 |