Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4702776 | Preparation of pigmentary red iron oxides | Jean-Marie C. Trautmann | 1987-10-27 |
| 4261966 | Process for the preparation of pigment grade iron oxides from ferrous sulphate and the resulting Fe.sub.2 O.sub.3 pigments | Pierre Portes, Jean-Marie C. Trautmann | 1981-04-14 |