Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8201708 | Method and apparatus for the continuous controlled discharge of solids | Stefan Gerl | 2012-06-19 |
| 6860313 | Method and device for the preparation of foundry sand | Uwe Greissing, Paul Eirich, Herbert Durr, Winfried Diem | 2005-03-01 |
| 6669360 | Device and method for sealing a discharge aperture in a rotating container | Paul Eirich | 2003-12-30 |