Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831192 | Process for preparing methylenedianiline and methylenebis(phenyl isocyanate) | Eckhard Ströfer, Jan Jacobs, Wilfried Seyfert, Olaf Schweers, Volker Scharr +1 more | 2004-12-14 |
| 6673960 | Work-up of distillation residues from the synthesis of toluene diisocyanate | Markus Maurer, Michael Sander, Eckhard Ströfer, Rene Leuthold, Burghard Hantel +2 more | 2004-01-06 |