Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5266539 | Process for the deferrization of kaolin, quartzose sand, paper filler, white pigment, pumice and electronics materials | — | 1993-11-30 |
| 5190900 | Process for removing iron from kaolin, quartz and other mineral concentrates of industrial interest | Luigi Toro, Anna Marabini, Bruno Paponetti | 1993-03-02 |