Showing 1–14 of 14 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Mark F. Sommars | Caterpillar | 44 |
| 2 | Timothy A. Vik | Caterpillar | 16 |
| 3 | James I. Portscheller | Caterpillar | 7 |
| #4 | Darrel Henry Meffert | Caterpillar | 5 |
| #5 | Daniel William Hosler | Unknown | 4 |
| #6 | William J. McCasky | Cnh America | 3 |
| #6 | Lewis C. Hunt | Caterpillar | 3 |
| #8 | William R. Most | Caterpillar | 2 |
| #8 | Roger D. Griswold | Caterpillar | 2 |
| #8 | Raymond D. Stratton | Modine Manufacturing | 2 |
| #8 | Randall G. Sommer | Caterpillar | 2 |
| #12 | Richard L. Slutz | Caterpillar | 1 |
| #12 | W. Kent Rutan | Caterpillar | 1 |
| #12 | Harold E. Marquis, III | Caterpillar | 1 |
Part of Illinois