Showing 1–20 of 20 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Leroy B. Stumpe | Sioux Steel | 12 |
| 1 | Dan Raap | Amesbury Group | 12 |
| 3 | David P. Groeneveld | Climate | 11 |
| #4 | Barbara R. Haberer | Alumend | 6 |
| #5 | Dale Nelson | — | 3 |
| #5 | Thomas Walter Spisak | Terex Usa | 3 |
| #7 | Timothy Graham | Sencore | 2 |
| #7 | Harlan D. Anderson | — | 2 |
| #7 | James Straatmeyer | — | 2 |
| #7 | Camille Kelly Nelson | Poet Research | 2 |
| #11 | Camille K. Crouch | Poet Research | 1 |
| #11 | Orlando S. Hofer | — | 1 |
| #11 | Darrell G. Graham | — | 1 |
| #11 | Brandon Redenius | — | 1 |
| #11 | Jimmie L. Muir | Citibank, N.A. | 1 |
| #11 | Gerald E. Cressman | — | 1 |
| #11 | Jim L. Muir | Citicorp Credit Services, Inc. (Usa) | 1 |
| #11 | Stephen Nathaniel Bostrom | Daktronics | 1 |
| #11 | Cyrus Albright | — | 1 |
| #11 | Patrick James Barnick | — | 1 |
Part of South Dakota