Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6348638 | Method for removing by-products obtained when producing acrylic acid or methacrylic acids | Volker Schliephake, Ulrich Hammon, Ulrich Rauh | 2002-02-19 |
| 5728272 | Separation by rectification of unsaturated carboxylic acids from solvents | Ulrich Hammon, Volker Schliephake, Ulrich Rauh | 1998-03-17 |
| 4623668 | Preparation of methanol | Franz J. Broecker, Gerd Duembgen, Gottfried Schlichthaerle, Guenter Weber | 1986-11-18 |