Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6987190 | Method for the continuous production of acetylene diurea | Dirk Franke, Klaus Horchler | 2006-01-17 |
| 6489438 | Fertilizer formulations comprising polysulfonic acids | Klaus Erhardt, Matthias Rädle, Gerd Bühler | 2002-12-03 |
| 4883530 | Use of ammonium syngenite as a slow-acting nitrogen fertilizer | Walter Von Maessenhausen, Johann Jung | 1989-11-28 |