Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6783119 | Packing for heat- and material-exchange columns | Helmut Jansen, Jochen Leben, Thomas Rietfort, Jörg Zellmer, Björn Kaibel | 2004-08-31 |
| 6770173 | Column partition | Helmut Jansen, Jochen Leben, Thomas Rietfort | 2004-08-03 |