Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Delmar D. Lewis | — | 3 |
| 1 | Wade L. Terrill | Bridgestone Bandag | 3 |
| 3 | Richard R. Hitchcock | Grain Processing | 2 |
| #4 | Gary W. Schnedler | Bandag Licensing | 1 |
| #4 | Kent D. Egel | — | 1 |
| #4 | Rod Hohenadel | — | 1 |
| #4 | Dennis L. McCann | — | 1 |
| #4 | Kenneth D. Egel | — | 1 |
Part of Iowa