Top Inventors at Mac Valves All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | James A. Neff | 32 |
| 2 | Jeffrey Simmonds | 17 |
| 3 | Kevin C. Williams | 15 |
| #4 | Robert H. Neff | 12 |
| #5 | Eric P. Janssen | 10 |
| #6 | Brett Anthony Landacre | 8 |
| #7 | Matthew Neff | 7 |
| #8 | Richard A. Fagerlie | 7 |
| #9 | Michael Jamison | 6 |
| #10 | Gilles Beaulieu | 5 |
| #11 | Michael E. Robert | 4 |
| #12 | Thomas R. Jones | 4 |
| #13 | David M. Sobka, Jr. | 2 |
| #14 | Joseph Richardson | 2 |
| #15 | Jeff Simmonds | 1 |
| #16 | Lynn R Long | 1 |
| #17 | Paul A. Yahr | 1 |
| #18 | Ray Jenkins | 1 |
| #19 | Thierry Delvaux | 1 |
| #20 | Timothy F. Walsh | 1 |
| #21 | Todd C. Voelker | 1 |
| #22 | Walter J. Bowman | 1 |
| #23 | Zafar A. Khan | 1 |
| #24 | Gilles Raets | 1 |