Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7677788 | Curved blade mixing device | Udo Zentner, Burghard Neumann, Jorg Schmalfeld | 2010-03-16 |
| 7507330 | Method for high-temperature short-time distillation of residual oil | Udo Zentner, Helmut Heurich | 2009-03-24 |
| 6841064 | Process for the gentle flash distillation of residual oils | Ingo Dreher, Udo Zentner | 2005-01-11 |
| 6652739 | Process for deasphalting residua by reactive recycle of high boiling material | Mitchell Jacobson, Willibald Serrand, Norman H. Sweed, Ingo Dreher, Udo Zentner +1 more | 2003-11-25 |
| 6469203 | Method for depolymerizing polymethylmethacrylate | Jorg Schmalfeld, Udo Zentner, Tobias Groschang, Udo Gropp, Werner Fuss +2 more | 2002-10-22 |
| 6413415 | Method for high-temperature short-time distillation of residual oils | Jorg Schmalfeld, Udo Zentner, Ingo Dreher, Willibald Serrano | 2002-07-02 |
| 5904423 | Stirring element for stirring gases into liquids | Peter Forschner, Rainer Krebs | 1999-05-18 |
| 5595475 | Agitating element | Peter Forschner, Rainer Krebs, Reinhard Geisler | 1997-01-21 |
| 5394811 | Process for drying a water-containing fuel in direct contact with a hot granular solid residue | — | 1995-03-07 |
| 5353517 | Process of drying water-containing solids in a fluidized bed | — | 1994-10-11 |
| 4935099 | Process for making wood charcoal | Jorg Schmalfeld, Ingo Dreher, Johannes Arnhold | 1990-06-19 |
| 4859284 | Combined process for the separation and continuous coking of high softening point asphaltenes | Roland Rammler, Hans-Adolf Herbertz, Rodolfo B. Solari, Rafael Hidalgo | 1989-08-22 |
| 4659456 | Process of drying and heating oil-containing solids | Roland Rammler, Ingo Dreher, Jorg Schmalfeld, Karl-Heinz Bietz | 1987-04-21 |
| 4563264 | Method of dry distillation of volatile substances from mineral matter containing same | Roland Rammler, Helmut Hahn, Ingo Dreher | 1986-01-07 |
| 4431406 | Rotary hearth furnace plant | — | 1984-02-14 |
| 4419216 | Process of recovering oil from oil-containing materials | Norbert Magedanz, Horst Seidel | 1983-12-06 |
| 4388174 | Process of recovering oil from oil-containing minerals | Norbert Magedanz, Horst Seidel | 1983-06-14 |