Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8455691 | Process for the purification of aromatic amines | Knut Sommer, Franz-Ulrich Gehlen, Peter Lehner, Andre Düx | 2013-06-04 |
| 7692042 | Process for preparing aniline | Markus Dugal, Franz-Ulrich Von Gehlen, Stefan Wershofen, Andre Lago, Peter Lehner | 2010-04-06 |