Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6624192 | Process for production of diacetylrhein | Alfons Carcasona, Wolf Grimminger, Klaus Witthohn, Helga Zaeske | 2003-09-23 |
| 5391775 | Process for production of diacetylrhein | Alfons Carcasona, Wolf Grimminger, Klaus Witthohn, Helga Zaeske | 1995-02-21 |