Top Inventors at Zimpro/Passavant All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | William M. Copa | 4 |
| 2 | Thomas J. Vollstedt | 3 |
| 3 | Curtis D. Cooley | 2 |
| #4 | David S. Ross | 2 |
| #5 | Bruce L. Brandenburg | 1 |
| #6 | Claude E. Ellis | 1 |
| #7 | David A. Beula | 1 |
| #8 | John K. Berrigan, Jr. | 1 |
| #9 | John A. Meidl | 1 |
| #10 | Ronald L. Edwards | 1 |