Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6464752 | Method for producing directly reduced, desulphurized iron | Jean-Luc Roth, Romain Frieden, Marc Solvi | 2002-10-15 |
| 6451086 | Process for thermal treatment of residual materials containing heavy metal and iron oxide | Romain Frieden, Marc Solvi | 2002-09-17 |
| 6395057 | Method for producing directly reduced iron in a layered furnace | Romain Frieden, Marc Solvi | 2002-05-28 |
| 6391088 | Method for heat-treating recyclings containing oil and iron oxide | Romain Frieden, Marc Solvi | 2002-05-21 |
| 6383252 | Method for the heat treatment of residues containing heavy metals | Jean-Luc Roth, Romain Frieden, Marc Solvi | 2002-05-07 |