Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Jacob Richard Smith | Vermeer Manufacturing | 5 |
| 2 | Jeffrey T. Smart | Smart Industries | 2 |
| 3 | David Hondred | Pioneer (Corteva) | 1 |
| 3 | Bjorn Johnson | Vermeer Manufacturing | 1 |
| 3 | Dave Goetzinger | The Dunbarton Group | 1 |
| 3 | Mary Rupe | Pioneer (Corteva) | 1 |
| 3 | CATHERINE J CLARK | Pioneer (Corteva) | 1 |
| 3 | Joshua Knichel | Dee Zee | 1 |
| 3 | Ricky Joe Sullivan McIntosh | The Middleby | 1 |
Part of Iowa