Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6596764 | Method of preparing diacetyl rhein | Alfons Carcasona, Wolf Grimminger, Helga Zaeske, Klaus Witthohn | 2003-07-22 |
| 6203835 | Use of hydroxy acid or a product containing the same in animal feed | Hakon Westermarck, Tuomas Walter Westermarck, by Jan Mikael Westermarcks, Juha Apajalahti, Maire Jaarma | 2001-03-20 |
| 5710260 | Method of extracting sennosides A, B and A1 | Alfons Carcasona, Wolf Grimminger, Helga Zaeske, Klaus Witthohn | 1998-01-20 |
| 5393898 | Method of preparing diacetyl rhein | Alfons Carcasona, Wolf Grimminger, Helga Zaeske, Klaus Witthohn | 1995-02-28 |
| 4595592 | Process for obtaining laxative compounds from senna drugs | — | 1986-06-17 |