Showing 1–10 of 10 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Joe Daniel Knight | Trimark | 5 |
| 1 | Tarek A. Adly | International Pipe Machinery | 5 |
| 3 | Steven O. Stirling | — | 4 |
| #4 | Anthony R. Borglum | — | 3 |
| #4 | Jason Kraus | Trimark | 3 |
| #4 | Michael Willert | Euro-Composites S.A. | 3 |
| #4 | Navarro T. Fosse | Hydrotile Machinery | 3 |
| #8 | Corey W. Cerwinske | — | 2 |
| #9 | Richard L. Goings | Agway | 1 |
| #9 | Steven R. McGregor | — | 1 |
Part of Iowa