Showing 1–14 of 14 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Jason A. Ryon | Delavan | 149 |
| 2 | Jerome Hartmann | Cobbs Manufacturing | 37 |
| 3 | James Nelson | General Mills | 5 |
| 3 | Wayne B. Noland | — | 5 |
| #5 | John S. Holloway | Emco Specialties | 2 |
| #5 | Jerome J. Hartman | Cobbs Manufacturing | 2 |
| #5 | Larry F. Noland | — | 2 |
| #8 | Terry Bunce | — | 1 |
| #8 | Nicholas Ripley | — | 1 |
| #8 | Jordan Ripley | — | 1 |
| #8 | Rachel Kara McClung | Workiva | 1 |
| #8 | Andrew K. Wyckoff | Wy-Tech | 1 |
| #8 | William D. Ludington | — | 1 |
| #8 | Allen D. Hudson | John Deere | 1 |
Part of Iowa