Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Frederick J. Good | Kreg Enterprises | 11 |
| 2 | Timothy John Kohnke | Ecolab Usa | 6 |
| 3 | Michael Vogel | Summers Manufacturing Company | 4 |
| #4 | Stanley E. Lass | — | 3 |
| #5 | Brian W Meier | Syngenta Participations Ag | 2 |
| #6 | Fredrick James Good | Kreg Enterprises | 1 |
| #6 | Randy L. Kester | — | 1 |
| #6 | H. M. Stahr | Iowa State University | 1 |
Part of Iowa