Showing 1–19 of 19 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Brian John Bischel | Vermeer Manufacturing | 4 |
| 2 | David J. Vande Steeg | Pella | 3 |
| 2 | Kevin L. Alft | Vermeer Manufacturing | 3 |
| 2 | Bruce A. Baier | Pella | 3 |
| #5 | Fred G. Delonti | Vermeer Manufacturing | 2 |
| #5 | Ted L. Hansen | Pella | 2 |
| #5 | David M. Wisniewski | The Dow Chemical | 2 |
| #5 | Hans Kelpe | Vermeer Manufacturing | 2 |
| #5 | Evan R. Vande Haar | Maytag | 2 |
| #10 | David Hanson | Underground Imaging Technologies | 1 |
| #10 | Christopher Dean Rettig | Vermeer Manufacturing | 1 |
| #10 | Randy Belding | — | 1 |
| #10 | Keith Roozeboom | Vermeer Manufacturing | 1 |
| #10 | Gary Verhoef | Vermeer Manufacturing | 1 |
| #10 | Thomas Eggers | Vermeer Manufacturing | 1 |
| #10 | Matthew Arlen Mills | Vermeer Manufacturing | 1 |
| #10 | Jeff Fleenor | Vermeer Manufacturing | 1 |
| #10 | Verlan Van Dyke | — | 1 |
| #10 | Evan R. VandeHaar | Maytag | 1 |
Part of Iowa