Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5925165 | Process and apparatus for the 3-stage treatment of solid residues from refuse incineration plants | Karl Heinz Pflugl, Norbert Kiethe, Ernst Hugentobler, Hans Ruegg, Ruedi Frey +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, Karl Heinz Pflugl, Norbert Kiethe, Ruedi Frey +2 more | 1998-06-16 |
| 5516357 | Process for producing cement from metallurgical slag | Alfred Edlinger | 1996-05-14 |
| 5405429 | Method for treatment and conversion of refuse incineration residues into environmentally acceptable and reusable material, especially for construction purposes | Alfred Edlinger | 1995-04-11 |