Top Inventors at Extraction Systems All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Devon Kinkead | 11 |
| 2 | Oleg P. Kishkovich | 10 |
| 3 | William Goodwin | 6 |
| #4 | Anatoly Grayfer | 3 |
| #5 | David Ruede | 2 |
| #6 | Michael A. Joffe | 2 |
| #7 | Robert W. Rezuke | 2 |
| #8 | Mark C. Phelps | 1 |
| #9 | Devon Kinkhead | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Devon Kinkead | 11 |
| 2 | Oleg P. Kishkovich | 10 |
| 3 | William Goodwin | 6 |
| #4 | Anatoly Grayfer | 3 |
| #5 | David Ruede | 2 |
| #6 | Michael A. Joffe | 2 |
| #7 | Robert W. Rezuke | 2 |
| #8 | Mark C. Phelps | 1 |
| #9 | Devon Kinkhead | 1 |