Showing 1–15 of 15 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Karl J. Kallenberg | Lifetouch National School Studios | 3 |
| 2 | Allen D. Mathison | Cherne Industries Incorporated | 2 |
| 2 | Herbert T. Nagasawa | University of Minnesota | 2 |
| #4 | Bruce E. McClellan | Thermo King | 1 |
| #4 | Darrell W. Hinklin | The Toro | 1 |
| #4 | Nathan R. Belk | Agere Systems Guardian | 1 |
| #4 | Terrence L. Palmquist | — | 1 |
| #4 | Stanley J. Dzik | — | 1 |
| #4 | Sharon L. Rasmussen | — | 1 |
| #4 | Cherng-Dean Wu | Magnetic Peripherals | 1 |
| #4 | Bruce M. Patrick | The Pillsbury | 1 |
| #4 | Randall A. Beihoffer | The Toro | 1 |
| #4 | Steven Scott Gieseke | Donaldson Company | 1 |
| #4 | John A. Imsdahl | Donaldson Company | 1 |
| #4 | Richard J. Mehus | Ecolab Usa | 1 |
Part of Minnesota