Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6828457 | Method for reducing the content of an unsaturated amine in a mixture containing an amine and a nitrile | Frank Ohlbach, Hermann Luyken, Andreas Ansmann, Rolf Fischer, Johann-Peter Melder +2 more | 2004-12-07 |
| 6790996 | Supported cobalt catalysts for nitrile hydrogenations | Andreas Ansmann | 2004-09-14 |
| 6723880 | Preparation of secondary amines from primary amines | Peter Neumann, Johann-Peter Melder, Arthur Hohn, Joachim Pfeffinger | 2004-04-20 |
| 6677486 | Hydrogenation of nitriles over Raney catalysts | Andreas Ansmann, Frank Funke, Frank Ohlbach, Martin Merger | 2004-01-13 |