Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6417385 | Method of producing acetone-cyanhydrin | Walter Börner, Ralph Marquardt, Rudolf Vanheertum, Karl-Heinz Vieweg | 2002-07-09 |
| 6284930 | Process for the preparation of 3-hydroxypropanal | Thomas Haas, Torsten Hahm, Willi Hofen, Rudolf Vanheertum | 2001-09-04 |