Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8697921 | Process for purifying wastewaters from the workup of crude aromatic nitro compounds | Petra Deckert, Leo Denissen, Bart Van De Voorde, Julia Leschinski, Stefan Robert Deibel +1 more | 2014-04-15 |
| 5481041 | Isolation of triphenylphosphine | Peter Lechtken, Friedrich Sauer, Dieter Hermeling | 1996-01-02 |
| 5109137 | Purification of indigo | Reinhold Kohlhaupt, Manfred Gaeng, Lothar Haas, Guenter Engelhardt, Walter Bieg | 1992-04-28 |
| 5075458 | Purification of indigo | Reinhold Kohlhaupt, Manfred Gaeng, Lothar Haas, Guenter Engelhardt, Walter Bieg | 1991-12-24 |