Showing 1–13 of 13 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Robert C. Allen | Masonite | 8 |
| 2 | David Matthew Roenspies | Progress Rail Locomotive | 4 |
| 2 | Robert G. Kopp | Suncast Technologies | 4 |
| #4 | Mary Jane Hibben | Swimc | 1 |
| #4 | Daniel Ott | Dial Tool Industries | 1 |
| #4 | Daniel Namie | Fellowes | 1 |
| #4 | Clifton R. Howell | Illinois Tool Works | 1 |
| #4 | Timothy R. Stuchl | — | 1 |
| #4 | Robert Kephart | Fermi Research Alliance | 1 |
| #4 | Mark A. Hentschel | Robertshaw Controls | 1 |
| #4 | Lydia Gray | — | 1 |
| #4 | Michael Bean | Molex | 1 |
| #4 | James S. Peterson | AT&T | 1 |
Part of Illinois