Showing 1–11 of 11 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Pete A. Betts | Donaldson Company | 4 |
| 2 | Mark D. LeBrun | — | 3 |
| 3 | Natasha Marie Suelflow | — | 2 |
| 3 | Lester W. Schultz | — | 2 |
| #5 | James E. Hinz | — | 1 |
| #5 | Howard J. Majerus | — | 1 |
| #5 | Brian A. Schablin | Brenton | 1 |
| #5 | Timothy D. Fraser | Brenton Engineering | 1 |
| #5 | Lonny David Collins | Illinois Tool Works | 1 |
| #5 | Edwin E. Emerson | — | 1 |
| #5 | James G. Backes | — | 1 |
Part of Minnesota