Top Inventors at Espial Group All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Kumanan Yogaratnam | 3 |
| 2 | Robert S. Horen | 3 |
| 3 | Eivind Sarto | 2 |
| #4 | Khai Truong | 2 |
| #5 | Dat Doan | 1 |
| #6 | Kevin P. Smith | 1 |
| #7 | Michael J. Abbott | 1 |
| #8 | Michael Hall | 1 |
| #9 | Michael Damian Mulligan | 1 |
| #10 | Paul Close | 1 |
| #11 | Samvel Avanesov | 1 |