Showing 1–16 of 16 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | William H. Eby | Stine Seed Farm | 931 |
| 2 | Terry D. Wurzer | — | 18 |
| 3 | Charlie J. Schafer | Unknown | 7 |
| #4 | Thomas A. Rosskopf | Sauer Gmbh | 4 |
| #4 | Richard Koberg | Richard And Carolyn Koberg Living Trust | 4 |
| #6 | Michael Stiefel | Syngenta Seeds | 3 |
| #7 | Mike Stark | Thermo King | 2 |
| #7 | Randy A. LaFreniere | — | 2 |
| #9 | Anthony Spiro Kokakis | — | 1 |
| #9 | Bart Robert Maere | — | 1 |
| #9 | Kiersten Hathaway | Pacesetter | 1 |
| #9 | James T. Tibbles | Osmundson Mfg. | 1 |
| #9 | Mark R Mertens | — | 1 |
| #9 | Glen Vowell | — | 1 |
| #9 | Richard F. Pawlowski | — | 1 |
| #9 | Harold L. McCurdy | — | 1 |
Part of Iowa