Top Inventors at International Safety Instruments All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | R. David Lewis | 5 |
| 2 | Paul D. Hiltman | 4 |
| 3 | Peter J. Jackson | 3 |
| #4 | Robert E. Gray | 3 |
| #5 | Craig W. Martin | 1 |
| #6 | David F. Rowe, Jr. | 1 |
| #7 | Donald W. Dawson | 1 |
| #8 | Victor Speck | 1 |
| #9 | Bruce A. Hefner | 1 |