Top Inventors at Transworld Drilling All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | James Ingle | 4 |
| 2 | Olen L. Riggs, Jr. | 3 |
| 3 | John Cox | 2 |
| #4 | Melvin G. Gibson | 2 |
| #5 | Jerry Richmond Johnson | 1 |
| #6 | Keith L. Morrison | 1 |
| #7 | Jeffrey P. Speligene | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | James Ingle | 4 |
| 2 | Olen L. Riggs, Jr. | 3 |
| 3 | John Cox | 2 |
| #4 | Melvin G. Gibson | 2 |
| #5 | Jerry Richmond Johnson | 1 |
| #6 | Keith L. Morrison | 1 |
| #7 | Jeffrey P. Speligene | 1 |