Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Lewis D. Proctor | Otis Engineering | 3 |
| 1 | Malcolm Gray-Stephens | Frank'S International | 3 |
| 1 | Alan Geoffrey Truscott | Air Products And Chemicals | 3 |
| #4 | Brian J. Crawford | — | 2 |
| #5 | Harrie Oort | — | 1 |
| #5 | Frederick Powada | — | 1 |
| #5 | Peter J. M. Hogarth | — | 1 |
| #5 | George Maitland | Petroleum Engineering Services Limited | 1 |
| #5 | Fergus Iain McKiddie | Btg International | 1 |