Top Inventors at Deep Casing Tools Limited All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Edward D. Scott | 5 |
| 2 | Tomasz Jozef Walerianczyk | 5 |
| 3 | David Stephenson | 4 |
| #4 | Lance S. Davis | 4 |
| #5 | Derek Herrera | 1 |
| #6 | Mark W. Presslie | 1 |
| #7 | Neil Andrew Abercrombie Simpson | 1 |
| #8 | Rafael Villa de Santana | 1 |
| #9 | Wojciech Buczak | 1 |