Top Inventors at Summagraphics All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Alexander M. Purcell | 12 |
| 2 | Thomas Zalenski | 10 |
| 3 | Robert M. McDermott | 7 |
| #4 | Charles D. Zinsmeyer | 5 |
| #5 | David A. Siefer | 5 |
| #6 | Henry G. Matthews | 5 |
| #7 | Michael J. Padula | 5 |
| #8 | Jamie L. Barbetti | 4 |
| #9 | James A. Parnell | 4 |
| #10 | John C. Venthem | 4 |
| #11 | Wayne J. Murray | 4 |
| #12 | Charles Merritt | 3 |
| #13 | Daniel A. Ferrara, Jr. | 3 |
| #14 | Daniel G. Lasley | 3 |
| #15 | William H. Valls | 3 |
| #16 | Marlan L. Schmidt | 2 |
| #17 | Paul D. Smith | 2 |
| #18 | Al Mletzko | 2 |
| #19 | Alfred E. Mletzko | 2 |
| #20 | Albert L. Whetstone | 2 |
| #21 | Carl Massey | 1 |
| #22 | Dan R. Poole | 1 |
| #23 | Edward J. Snyder | 1 |
| #24 | Frank R. Chiappetta | 1 |
| #25 | George Hesse | 1 |
| #26 | Gregory L. Spaulding | 1 |
| #27 | Khosrow Modjallal | 1 |
| #28 | Marvin L. Freeman | 1 |
| #29 | Ralph J. Lake, Jr. | 1 |
| #30 | Richard T. Rocheleau | 1 |
| #31 | Robert L. Davis | 1 |
| #32 | Scott A. McDermott | 1 |
| #33 | Scott Zimmer | 1 |
| #34 | Thomas L. Stone | 1 |
| #35 | John C. Ventham | 1 |
| #36 | Kenneth Kouhia | 1 |
| #37 | Michael Bals | 1 |
| #38 | Tomas Trousil | 1 |
| #39 | Thomas E. Papsin | 1 |
| #40 | Alex Purcell | 1 |