Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6624192 | Process for production of diacetylrhein | Alfons Carcasona, Wolf Grimminger, Pentti Hêitala, Klaus Witthohn | 2003-09-23 |
| 6596764 | Method of preparing diacetyl rhein | Alfons Carcasona, Wolf Grimminger, Pentti Hietala, Klaus Witthohn | 2003-07-22 |
| 6020384 | Process for the manufacture of flavanolignan preparation with improved release and absorbability, compositions obtainable thereby and their use for the preparation of pharmaceuticals | Wilfried Wachter | 2000-02-01 |
| 5906991 | Process for the manufacture of flavanolignan preparations with improved release and absorbability, compositions obtainable thereby and their use for the preparation of pharmaceuticals | Wilfried Wachter | 1999-05-25 |
| 5710260 | Method of extracting sennosides A, B and A1 | Alfons Carcasona, Wolf Grimminger, Pentti Hietala, Klaus Witthohn | 1998-01-20 |
| 5393898 | Method of preparing diacetyl rhein | Alfons Carcasona, Wolf Grimminger, Pentti Hietala, Klaus Witthohn | 1995-02-28 |
| 5391775 | Process for production of diacetylrhein | Alfons Carcasona, Wolf Grimminger, Pentti Hêitala, Klaus Witthohn | 1995-02-21 |