Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5073271 | Utilization of soot from synthesis gas production in sewage treatment | Bruno Sander, Uwe Kempe, Wolfgang Vodrazka, Gero Lueth | 1991-12-17 |
| 4828715 | Cleaning and disposal of carbon black and ash containing wastewaters | Bruno Sander, Gero Lueth, Robert K. Horn, Uwe Kempe | 1989-05-09 |
| 4728437 | Treatment and disposal of wastewaters containing carbon black and ash | Hans Gettert, Knut Kaempfer, Bruno Sander, K. Robert Mueller | 1988-03-01 |