Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6825346 | Process for the production of melamine crystals at high pureness | — | 2004-11-30 |
| 6730278 | Process and plant for the production of urea with high conversion yield and low energy consumption | Umberto Zardi | 2004-05-04 |
| 6702992 | Method for modernizing a urea production plant | Federico Zardi | 2004-03-09 |
| 6696026 | Process for combined production of ammonia and urea | Umberto Zardi | 2004-02-24 |