Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5973217 | Method for processing recycled or scrap plastics | Horst Hastrich, Rolf Holighaus, Klaus Niemann, Claus Strecker | 1999-10-26 |
| 5917102 | Device for depolymerizing used and waste plastics | Rolf Holighaus, Klaus Niemann, Klaus Strecker, Dieter Ullrich | 1999-06-29 |