Showing 1–20 of 20 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Jon A. Schmidgall | Hawkeye Concrete Products | 12 |
| 2 | Randy L. Sperry | Winegard | 7 |
| 3 | Hartzell H. Schmidgall | Hawkeye Concrete Products | 6 |
| #4 | Ronald D. Schmidgall | Hawkeye Concrete Products | 5 |
| #5 | Orrin Ryan Lanz | Winegard | 4 |
| #6 | Dave STRABALA | Hawkeyepedershaab Concrete Technologies | 3 |
| #6 | Paul W. Hulett | Conifer | 3 |
| #8 | Richard D. Housman | J. I. Case | 2 |
| #8 | Nathan Schock | Hawkeyepedershaab Concrete Technologies | 2 |
| #10 | Jared David Schmidgall | Winegard | 1 |
| #10 | Steven A. NUNNIKHOVEN | Hawkeye Concrete Products | 1 |
| #10 | Marc Eric Zaiser | — | 1 |
| #10 | Curtis Beekman | Cnh Industrial America | 1 |
| #10 | Bradley G. Bork | — | 1 |
| #10 | Bryan Moehle | Hawkeyepedershaab Concrete Technologies | 1 |
| #10 | Aaron Schmidgall | Hawkeyepedershaab Concrete Technologies | 1 |
| #10 | Don J. McAlpine | — | 1 |
| #10 | John David Cortum | — | 1 |
| #10 | Michael Jaye Mathiasmeier | — | 1 |
| #10 | Richard Lee Niespodzany | Cnh Industrial America | 1 |
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