Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5445765 | Petroleum emulsion breakers | Wilfried Sager, Hans-Henning Vogel, Knut Oppenlaender | 1995-08-29 |
| 5401439 | Oil-demulsifiers based on an alkoxylate and preparation of this alkoxylate | Wilfried Sager, Hans-Henning Vogel, Knut Oppenlaender | 1995-03-28 |
| 5393463 | Use of trialkanolamine polyethers as demulsifiers for oil-in-water emulsions | Rolf Fikentscher, Knut Oppenlaender, Johannes P. Dix, Wilfried Sager, Hans-Henning Vogel +1 more | 1995-02-28 |
| 5234626 | Methods of demulsifying employing condensates as demulsifiers for oil-in water emulsions | Rolf Fikentscher, Knut Oppenlaender, Johannes P. Dix, Wilfried Sager, Hans-Henning Vogel | 1993-08-10 |