Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6783119 | Packing for heat- and material-exchange columns | Egon Zich, Helmut Jansen, Thomas Rietfort, Jörg Zellmer, Björn Kaibel | 2004-08-31 |
| 6770173 | Column partition | Helmut Jansen, Thomas Rietfort, Egon Zich | 2004-08-03 |
| 5585046 | Column for performing thermal separations and/or chemical reactions | Helmut Jansen, Thomas Rietfort, Egon Zich | 1996-12-17 |
| 5580425 | Column for overheated liquids | Helmut Jansen, Thomas Rietfort, Egon Zich | 1996-12-03 |
| 5269465 | Liquid distributor tray for heat exchange equipment | Egon Zich, Helmut Jansen, Thomas Rietfort | 1993-12-14 |