Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4261966 | Process for the preparation of pigment grade iron oxides from ferrous sulphate and the resulting Fe.sub.2 O.sub.3 pigments | Jean-Marie C. Trautmann, Daniel A. E. Hoffner | 1981-04-14 |
| 4258024 | Non-pollutant process for the manufacture of neutral calcium hypochlorite with a high content of active chlorine | Jean O. Hoffer, Jean-Claude Guelen, Jean P. Haller | 1981-03-24 |