Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6514475 | Process for the production of sodium carbonate anhydrate | Harald Oosterhof, Geert-Jan Witkamp, Johannes de Graauw | 2003-02-04 |
| 6334989 | Production of water-free soda | Johannes Albertus Maria Meijer, Robert Geertman, Harald Oosterhof, Geert-Jan Witkamp | 2002-01-01 |
| 5630992 | Anti-caking agents for ammonium thiocyanate | Antonius E. D. M. van der der Heijden, Marielle G. M. van der Horst | 1997-05-20 |