Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Marc C. Albertsen | Pioneer (Corteva) | 10 |
| 2 | James P. Elwell | Putco | 4 |
| 3 | Ronald D. Flannagan | Pioneer (Corteva) | 3 |
| #4 | Derrick Clausen | Delavan | 1 |
| #4 | Loren Steenhoek | Pioneer (Corteva) | 1 |
Part of Iowa