Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4728437 | Treatment and disposal of wastewaters containing carbon black and ash | Knut Kaempfer, Bruno Sander, Siegfried Marquardt, K. Robert Mueller | 1988-03-01 |
| 4623533 | Desulfurization of H.sub.2 S-containing gases | Franz J. Broecker, Knut Kaempfer | 1986-11-18 |
| 4521387 | Purification of gases containing CO and/or CO.sub.2 | Franz J. Broecker, Knut Kaempfer | 1985-06-04 |
| 4507274 | Desulfurization of H.sub.2 S-containing gases | Franz J. Broecker, Knut Kaempfer | 1985-03-26 |
| 4420342 | Method of prevention of deposits in the pipes of waste heat boilers | Knut Kaempfer | 1983-12-13 |