Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4720577 | Process for the extraction of carboxylic acids from dilute aqueous solutions | Bernhard Wojtech, Walter Steppich, Knut Riedel | 1988-01-19 |
| 4235790 | Process for separating p-benzoquinone from the reaction products of phenol oxidation as quinhydrone | Werner Muller | 1980-11-25 |
| 4214106 | Process for the preparation of ethylene glycol | Friedrich Wunder | 1980-07-22 |