Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6784214 | Method and device for recycling pet materials | Helmuth Schulz, Georg Wendelin | 2004-08-31 |
| 6719454 | Device and method for preparing plastic material, in particular, thermoplastic material | Helmuth Schulz, Georg Wendelin | 2004-04-13 |