Showing 1–10 of 10 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Nick Ballard | Springfield | 14 |
| 2 | Ernest G. Ovitz, III | John H. Best & Sons | 10 |
| 3 | Phillip E. Dietsch | Martin Engineering | 5 |
| #4 | Anne Jeanblanc | Caterpillar | 3 |
| #5 | Daniel J. Fox | Iowa State University | 2 |
| #6 | Hubert D. Franks | John H. Best & Sons | 1 |
| #6 | Dana John Willer | Caterpillar | 1 |
| #6 | Leland E. Pearson | — | 1 |
| #6 | James K. Jeanblanc | — | 1 |
| #6 | Wayne Glisan | Maytag | 1 |
Part of Illinois