Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Michael Edward Hay | Waterloo Industries | 10 |
| 2 | Gerard R. Thiel | University Of Northern Iowa Research Foundation | 4 |
| 3 | Rick Tresnak | — | 2 |
| 3 | Blake Lockwood Waldrop | — | 2 |
| #5 | Bruce Helgeson | — | 1 |
| #5 | Wade Hennings | — | 1 |
Part of Iowa