Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5925165 | Process and apparatus for the 3-stage treatment of solid residues from refuse incineration plants | Norbert Kiethe, Ernst Hugentobler, Hans Ruegg, Ruedi Frey, Anton Mayer +2 more | 1999-07-20 |
| 5765489 | Process for the treatment of solid residue from refuse incineration plants, and apparatus for performing the process | Ernst Hugentobler, Hans Ruegg, Norbert Kiethe, Ruedi Frey, Anton Mayer +2 more | 1998-06-16 |