Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5109137 | Purification of indigo | Reinhold Kohlhaupt, Manfred Gaeng, Lothar Haas, Walter Bieg, Matthias Fankhaenel | 1992-04-28 |
| 5075458 | Purification of indigo | Reinhold Kohlhaupt, Manfred Gaeng, Lothar Haas, Walter Bieg, Matthias Fankhaenel | 1991-12-24 |