Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5451382 | Process and plant for removing lead, cadmium and zinc from dusts | Dirk C. Vermaire | 1995-09-19 |
| 5431895 | Process for the removal of lead and cadmium from phosphoric acid | Dirk C. Vermaire, Horst Bennoit | 1995-07-11 |
| 4670244 | Process for reducing metal ions in aqueous solutions | Wouter Roos, Arie Lagendijk, Dieter Steidl, Raban von Schenck | 1987-06-02 |
| 4632812 | Process for making alkali metal phosphate solutions containing little vanadium | Johannes-Wilhelmus Kinneging, Wouter Roos, Andries Jelsma, Raban von Schenck | 1986-12-30 |