Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6573393 | Method for producing L-ascorbic acid | Wolfgang Heinz, Klaus Beschmann, Bernd Muller, Jöran Stoldt | 2003-06-03 |
| 5744618 | Process for the preparation of ascorbic acid | Karlheinz Wembacher | 1998-04-28 |
| 5518588 | Method for preparing 3-aminopyridines from 3-nitropyridines | Karlheinz Wembacher, Heinz-Hermann Bokel | 1996-05-21 |
| 5473079 | Process for preparing 2-arylbenzimidazole-5-sulfonic acids | Ulrich Heywang, Ingeborg Stein, Michael Casutt, Gerald Faller, Hartmut Hartner | 1995-12-05 |