Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5846501 | Process for the selective recovery of the salt constituents from used hardening shop salts which contain nitrite-nitrate | Georg Wahl, Eberhard Gock, Stefan Wigger, Jorg Kahler | 1998-12-08 |
| 5527018 | Filter unit and apparatus for desludging salt baths | George Wahl, Tokuo Sato | 1996-06-18 |
| 5453109 | Method for the preparation of a hardening salt in piece form and product | Peter Schalke, Eberhard Mueller, Georg Wahl | 1995-09-26 |