Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6254948 | Slit protection for a tubular body | — | 2001-07-03 |
| 6009911 | Safety hose | Hans-Werner Friederich, Uwe Maass, Peter Zerfowski | 2000-01-04 |
| 5722794 | Float for floating flexible pipes | Hans-Werner Friederich, Uwe Maass | 1998-03-03 |