Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Terry L. Berg | Sioux City Tarp | 2 |
| 1 | Donald William Bremer | Sioux City Tarp | 2 |
| 3 | Casey Christopher McKewon | — | 1 |
| 3 | Keith Alan Kozak | Gateway 2000 | 1 |
| 3 | Mark Corbin | International Pipe Machinery | 1 |
Part of Iowa