Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679858 | Process for the manufacture of aromatic amines by gas-phase hydrogenation and catalyst useful thereof | Reinhard Langer, Hans-Josef Buysch | 1997-10-21 |
| 5593936 | Hydrated niobium oxide and hydrated tantalum oxide catalysts, their preparation and a process for preparing N-alkylated anilines using these catalysts | Volker Glock, Bernd Pennemann, Joerg-Dietrich Jentsch, Eberhard Zirngiebl, Horst Koller | 1997-01-14 |