Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831192 | Process for preparing methylenedianiline and methylenebis(phenyl isocyanate) | Jan Jacobs, Wilfried Seyfert, Hans Volkmar Schwarz, Olaf Schweers, Volker Scharr +1 more | 2004-12-14 |
| 6758990 | Stabilizing agent for hydroxylamine solutions | Markus Weber, Hans-Josef Sterzel, Otto Watzenberger | 2004-07-06 |
| 6673960 | Work-up of distillation residues from the synthesis of toluene diisocyanate | Hans Volkmar Schwarz, Markus Maurer, Michael Sander, Rene Leuthold, Burghard Hantel +2 more | 2004-01-06 |