Showing 1–15 of 15 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Stewart T. Leslie | Euro-Celtique S.A. | 9 |
| 2 | Hans Paul Hopper | Cameron International | 4 |
| 2 | Jean Boulet | Institut Francais Du Petrole | 4 |
| #4 | Rory McCrae Tulloch | Smith International | 2 |
| #5 | Robert O. Lilley | Vetco Gray | 1 |
| #5 | Stephen A. Cromar | Vetco Gray | 1 |
| #5 | Michael Wardley | Ardyne Holdings, Limited | 1 |
| #5 | Randall Pounds | — | 1 |
| #5 | William H. Sutton | — | 1 |
| #5 | Christopher R. Bond | — | 1 |
| #5 | Peter J. Rayson | Chevron | 1 |
| #5 | Roger John Catherall | — | 1 |
| #5 | Klaas Zwart | Petroline Wireline Services Limited | 1 |
| #5 | Derek R. Masson | Fanduel Limited | 1 |
| #5 | Johann Springer | Alcatel N.V. | 1 |