Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672745 | Method for the continuous preparation of methionine or methionine derivatives | Hans-Albrecht Hasseberg, Stephan Rautenberg, Heinrich Petsch, Horst Weigel | 1997-09-30 |
| 5618957 | Method of producing salcomine | Frank Hubner, Ulrich Gora, Karlheinz Drauz | 1997-04-08 |