Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618432 | Process for solvent recovery | Siegfried Rewitzer | 1997-04-08 |
| 5611840 | Process for separating out hydrogen chloride | Werner Kraus, Thomas Vernaleken, Wolfgang Schick | 1997-03-18 |