Showing 1–15 of 15 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Robert Edwin Gearing | — | 3 |
| 2 | Noel De Villiers | — | 1 |
| 2 | Kobus de Villiers | — | 1 |
| 2 | Uwe Harms | Sterling Plumbing Group | 1 |
| 2 | Ronald Grobler | — | 1 |
| 2 | Christian Julian Veermeer | — | 1 |
| 2 | James Michael O'Neill | — | 1 |
| 2 | Philip Duffy | Sterling Plumbing Group | 1 |
| 2 | Vivienne Jean Griffith | Farmarc Nederland Bv | 1 |
| 2 | Kenneth Douglas Kynoch | — | 1 |
| 2 | Howden W. Farham | — | 1 |
| 2 | Patrick J. D. Bouic | Rooperol (Na) Nv | 1 |
| 2 | Luigi Nassimbeni | Farmarc Nederland Bv | 1 |
| 2 | Mino Rodolfo Caira | Farmarc Nederland Bv | 1 |
| 2 | Petrus B. Kruger | — | 1 |