Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Julian P. Trangsrud | Royal Concrete Pipe | 3 |
| 2 | John M. Larson | Avolare 2 | 2 |
| 3 | Christopher T. Norgaard | — | 1 |
| 3 | Dennis C. Anderson | National Polymers | 1 |
| 3 | Ricardo Spiro DeGrego | Thermo King | 1 |
| 3 | Jeffrey Burgess | Tokyo Electron Limited | 1 |
| 3 | James Zell | — | 1 |
| 3 | Kurt E. Goetzke | — | 1 |
Part of Minnesota