Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6388137 | Method of purifying triethanolamine | Gunther Ruider | 2002-05-14 |
| 6348601 | Preparation of N-methyl-2-pyrrolidone (NMP) | Frank Ohlbach, Johann-Peter Melder, Martin Rudloff, Jörg Liebe | 2002-02-19 |