Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Ralph Soles | Ashland Products | 2 |
| 1 | Samuel Minton | Bnsf Railway | 2 |
| 1 | Ben Soles | — | 2 |
| #4 | Steven G. Redford | Poet Research | 1 |
| #4 | Todd Peterson | Poet Research | 1 |
| #4 | Scott William Wickersham | — | 1 |
| #4 | Nathan Thompson | — | 1 |
Part of South Dakota