Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5480464 | Filtration | Pierre De Villiers, Ivor M. Minnaar | 1996-01-02 |
| 5403367 | Filtration | Pierre De Villiers, Ivor M. Minnaar | 1995-04-04 |
| 4985058 | Vortex tube separating device | Pierre De Villiers, Marten C. van Dijken | 1991-01-15 |
| 4976748 | Vortex tube separating device | Pierre De Villiers, Marten C. van Dijken | 1990-12-11 |
| 4971603 | Vortex tube separating device | Pierre De Villiers, Marten C. van Dijken | 1990-11-20 |