Showing 1–16 of 16 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Todd C. Mayer | Steffes | 3 |
| 1 | Jonathan L. Zent | Medora Environmental | 3 |
| 1 | Dean A. Kovash | Steffes | 3 |
| 1 | Joel J. Bleth | Medora Environmental | 3 |
| 1 | Willard R. Tormaschy | Medora Environmental | 3 |
| #6 | Douglas P. Walter | Medora Environmental | 2 |
| #6 | Gary A. Kudrna | Medora Environmental | 2 |
| #6 | Kent J. Kudrna | Steffes | 2 |
| #9 | Paul J. Steffes | Steffes | 1 |
| #9 | Joe E. Fude | Steffes | 1 |
| #9 | Tyson Hammond | — | 1 |
| #9 | Andrei Juc | — | 1 |
| #9 | Gregory L. Schafer | Tgr Construction | 1 |
| #9 | Thomas P. Steffes | Steffes | 1 |
| #9 | Austin P. Zeller | Steffes | 1 |
| #9 | Thomas G. Fisher | Tgr Construction | 1 |
Part of North Dakota