Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5661209 | Paint formulations | Nicolaas Cornelis Maria Beers, Geert Johannes Maria Bijl, Johanna Maria Helena Van Den Tol-Kershof | 1997-08-26 |
| 4234546 | Liquid/liquid extraction of nickel values | Abraham J. van der Zeeuw, Riekert Kok | 1980-11-18 |