Issued Patents All Time
Showing 25 most recent of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7670986 | Manganese dioxide catalyst for the hydrolysis of carbonitriles | Axel Ronneburg, Christoph Weckbecker | 2010-03-02 |
| 7485748 | Process for the production of 2-hydroxy-4-methythiobutyric acid ammonium salt | Christoph Weckbecker, Klaus Huthmacher | 2009-02-03 |
| 6797827 | Process for the preparation of alpha-amino acids by hydrolysis of hydantoins at elevated pressure and elevated temperature | Martin Körfer, Dieter Buss, Christoph Weckbecker, Hans Joachim Hasselbach, Klaus Huthmacher | 2004-09-28 |
| 6552222 | Hydrolysis of acylamino acids | Klaus Huthmacher, Christoph Weckbecker | 2003-04-22 |
| 6329535 | Process for preparing esterified chroman compounds | Steffen Krill, Hans Joachim Hasselbach, Klaus Huthmacher | 2001-12-11 |
| 6316661 | Process for the production of 2,3,5-trimethylhydroquinone diesters | Steffen Krill, Klaus Huthmacher, Nongyuan Shi, Georg Markowz, Volker Hafner | 2001-11-13 |
| 6150563 | Aliphatic alkanals with improved storage stability and method of improving the storage stability | Hans Joachim Hasselbach, Klaus Huthmacher, Katja Kelm | 2000-11-21 |
| 6103924 | Process for the preparation of 2,3,5-trimethylhydroquinone diesters | Nongyuan Shi, Mario Scholz, Steffen Hasenzahl, Bernd Drapal, Ralph McIntosh +2 more | 2000-08-15 |
| 6048988 | Process for the production of .alpha.-tocopherol esters | Steffen Krill, Frank Hubner, Rainer Hahn, Klaus Huthmacher | 2000-04-11 |
| 5969176 | Process for the production of trimethylhydroquinone diesters and of trimethylhydroquinone | Steffen Krill, Nongyuan Shi, Hans Joachim Hasselbach, Klaus Huthmacher, Frank Hubner | 1999-10-19 |
| 5672745 | Method for the continuous preparation of methionine or methionine derivatives | Hans-Albrecht Hasseberg, Klaus Huthmacher, Stephan Rautenberg, Heinrich Petsch | 1997-09-30 |
| 5049283 | Method for the recovery of aqueous solutions of free, neutral .alpha.-amino acids from aqueous solutions of their alkali-metal salts | Hans Joachim Hasselbach, Axel Kleeman, Herbert Klenk | 1991-09-17 |
| 4562153 | Process for the separation of L-leucine and L-isoleucine | Axel Kleemann, Jurgen Martens | 1985-12-31 |
| 4562152 | Process for obtaining pure L-leucine | Axel Kleemann, Jurgen Martens | 1985-12-31 |
| 4551548 | Process for the recovery of S-(carboxymethyl)-(R)-cysteine and S-(carboxymethyl)-(S)-cysteine | Axel Kleemann, Jurgen Martens | 1985-11-05 |
| 4511719 | N.alpha.-(3-Cyanopropanoyl)-aminocarboxylic acid derivatives and their use | Axel Kleemann, Jurgen Martens | 1985-04-16 |
| 4469875 | Optically active proline derivative, process for its production and use | Eberhard Busker, Jurgen Martens, Regina Steigerwald | 1984-09-04 |
| 4430509 | Process for the separation of the racemate (R,S)-cysteine | Horst Bethge, Karlheinz Drauz, Axel Kleemann, Jurgen Martens | 1984-02-07 |
| 4426532 | .alpha.-(3-Cyano-propanoyl)-aminocarboxylic acid derivatives | Axel Kleemann, Jurgen Martens | 1984-01-17 |
| 4388082 | Device for obtaining large amounts of combustible gas from carbonaceous materials | Friedrich W. Guttmann | 1983-06-14 |
| 4376215 | Process for the production of 4-aminobutyramide hydrochloride | Klaus Deller, Axel Kleemann, Jurgen Martens | 1983-03-08 |
| 4362561 | Method for the smelting of material such as ore concentrates | Gerhard Melcher | 1982-12-07 |
| 4358311 | Method and apparatus for the smelting of material such as ore concentrates | Gerhard Melcher | 1982-11-09 |
| 4322552 | Process for the production of 4-aminobutyramide hydrochloride | Axel Kleemann, Jurgen Martens | 1982-03-30 |
| 4313894 | Process for the production of 3-cyanopropionamide | Axel Kleemann, Wolfgang Leuchtenberger, Jurgen Martens | 1982-02-02 |