Top Inventors at Span & Company All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | James C. Stevens | 3 |
| 2 | Malcolm S. McClure | 3 |
| 3 | Phong B. Chau | 3 |
| #4 | William E. Baker | 3 |
| #5 | John J. Robinson | 1 |
| #6 | Kevin E. Nortrup | 1 |
| #7 | William R. Baker | 1 |
| #8 | William H. Baker | 1 |
| #9 | Andrew Artimovich | 1 |