Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6146612 | Method for recovering sulfuric acid from sulfate salts | Hans-Albrecht Hasseberg, Klaus Huthmacher, Volker Hafner, Harald Heinzel | 2000-11-14 |
| 6140536 | Process for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA) | Hans-Albrecht Hasseberg, Klaus Huthmacher, Volker Hafner, Harald Heinzel, Barbara Jäger | 2000-10-31 |
| 6126972 | Process for the preparation of aqueous sodium methioninate solutions and use of those solutions in the production of a granulate | Martin Körfer, Lutz Rohland, Wolfram Binder, Hans Christian Alt, Klaus Huthmacher +1 more | 2000-10-03 |
| 6103924 | Process for the preparation of 2,3,5-trimethylhydroquinone diesters | Nongyuan Shi, Mario Scholz, Steffen Hasenzahl, Horst Weigel, Bernd Drapal +2 more | 2000-08-15 |
| 6008409 | Method for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA) which is stable in storage | Hans-Albrechl Hasseberg, Klaus Huthmacher, Volker Hafner, Harald Heinzel, Axel Ronneburg | 1999-12-28 |
| 5990349 | Process for the preparation of D,L-methionine or the salt thereof | Friedhelm Geiger, Baudouin Halsberghe, Klaus Hentschel, Klaus Huthmacher, Martin Körfer +5 more | 1999-11-23 |
| 5969176 | Process for the production of trimethylhydroquinone diesters and of trimethylhydroquinone | Steffen Krill, Horst Weigel, Nongyuan Shi, Klaus Huthmacher, Frank Hubner | 1999-10-19 |
| 5770769 | Process for the preparation of D,L-methionine or the salt thereof | Friedhelm Geiger, Baudouin Halsberghe, Klaus Hentschel, Klaus Huthmacher, Martin Körfer +5 more | 1998-06-23 |
| 5049283 | Method for the recovery of aqueous solutions of free, neutral .alpha.-amino acids from aqueous solutions of their alkali-metal salts | Axel Kleeman, Herbert Klenk, Horst Weigel | 1991-09-17 |