Showing 1–12 of 12 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Paul L. Hawkins | Fawn Engineering | 7 |
| 2 | Leslie James Lettow | Ms Technologies | 6 |
| 3 | John D. Hambleton | — | 5 |
| #4 | Randy E. Harwood | Fawn Engineering | 2 |
| #4 | Javin Jacob Sword | Wells Fargo Bank, N.A. | 2 |
| #4 | Jeffery W. Derry | E.I. Du Pont De Nemours And | 2 |
| #4 | Arnold F. Kopaska | — | 2 |
| #8 | George Pollak | Orsan | 1 |
| #8 | Larry A. Kopaska | — | 1 |
| #8 | Billy Sparks | Illinois Tool Works | 1 |
| #8 | Jeffery J. Wilson | Fawn Engineering | 1 |
| #8 | David Michael Hunt | — | 1 |
Part of Iowa