Showing 1–23 of 23 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Paul Daniel Parker | Hunter Engineering | 9 |
| 2 | Brian Thomas Mosdal | John Deere | 5 |
| 3 | Virgil Dean Haverdink | John Deere | 2 |
| 3 | George Singletary | Pioneer (Corteva) | 2 |
| #5 | Todd Sommerfeld | Unknown | 1 |
| #5 | Thomas Pesek | Fisher Controls International | 1 |
| #5 | Eric D. Groen | AMD | 1 |
| #5 | Richard A. Humpal | John Deere | 1 |
| #5 | Robert Daniel | MIT | 1 |
| #5 | Jeff M. Grote | — | 1 |
| #5 | Bruce A. Cook | Iowa State University | 1 |
| #5 | Kenneth L. Lebsack | Townsend Engineering | 1 |
| #5 | Jeff Herrin | Sauer-Danfoss | 1 |
| #5 | David L. Steinlage | John Deere | 1 |
| #5 | Paul Dayton | Treace Medical Concepts | 1 |
| #5 | Craig A. Smiens | Townsend Engineering | 1 |
| #5 | Timothy G. Helentjaris | Pioneer (Corteva) | 1 |
| #5 | Colin R. Hart | F.R. Drake | 1 |
| #5 | Dennis S. Elwell | Putco | 1 |
| #5 | Susan K. Fisher | Maytag | 1 |
| #5 | Michael Lee Pearson | John Deere | 1 |
| #5 | Devanand Luthria | Omegatech | 1 |
| #5 | Gary O. Grams | Accu-Mold | 1 |
Part of Iowa