Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10029937 | Printer head for 3D printing | — | 2018-07-24 |
| 4459144 | Multi-stage counter-current concentration system and method | Jacques P. Roodenrijs | 1984-07-10 |
| 4337410 | Cathode-ray tube face-plate | Josephus J. van der Geer, Marinus Ploeger, Wilhelmus J. Spoor, Gerardus H. A. M. Van der Steen | 1982-06-29 |
| 4316368 | Multi-stage counter-current concentrating method | Jacques P. Roodenrijs | 1982-02-23 |