Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7307190 | Process for the preparation of toluenediamine | Bernd Pennemann, Bill Brady, Rainer Buse | 2007-12-11 |
| 5728880 | Process for the separation of high-boiling materials from the reaction mixture generated during the production of diaminotoluene | Heiko Beckhaus, Harro Witt, Uwe J. Zarnack | 1998-03-17 |