Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6562148 | Pretreatment of aluminum surfaces with chrome-free solutions | Thomas Wendel, Klaus Bittner, Hardy Wietzoreck | 2003-05-13 |
| 6548561 | Method and device for recovering pure PVC from plastic waste containing PVC | Alexander Baron von Heyking, Jurgen Leitzke | 2003-04-15 |