Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5234553 | Process for obtaining a pure hydrocarbon from a sump product of an extractive distillation | Martin Kaiping, Hans-Christoph Schneider, Hans-Jurgen Vollmer | 1993-08-10 |
| 5107055 | Method for simultaneous recovery of pure benzene and pure toluene | Hans-Jurgen Vollmer | 1992-04-21 |