Showing 1–19 of 19 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Michael G. Kean | John Deere | 63 |
| 2 | David R. Blake | Blue-9 | 24 |
| 3 | Charles Morris | Ogilvie Mills | 14 |
| #4 | G. Todd Clark | Marley Pump | 5 |
| #5 | Jakob Nelles | Unknown | 4 |
| #6 | Ricky Lee Weires | John Deere | 3 |
| #6 | Jamie Jerusa Popper | Blue-9 | 3 |
| #6 | Brady Whitney | The Prophet | 3 |
| #9 | Cory Conway | Cnh Industrial America | 2 |
| #9 | Nancy Erin Lange | — | 2 |
| #9 | Mike Rederer | Plastibec | 2 |
| #9 | Michael Eckhart | — | 2 |
| #13 | Samuel W. Williams | — | 1 |
| #13 | Millard F. McKinsey | — | 1 |
| #13 | George A. Hellmer | — | 1 |
| #13 | Mike Eckhart | — | 1 |
| #13 | Larry N. Kilburg | — | 1 |
| #13 | Edwin A. Frost | — | 1 |
| #13 | David L. Knoebel | — | 1 |
Part of Iowa