Top Inventors at Hydro Systems All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | William F. Sand | 8 |
| 2 | Mark D. Dalhart | 5 |
| 3 | Gordon P. Baker | 2 |
| #4 | James C. Bricker | 2 |
| #5 | Richard E. Haas | 2 |
| #6 | Bruce Benzing | 1 |
| #7 | David Lippman | 1 |
| #8 | Robert P. Carnahan | 1 |
| #9 | Robert J. Murphy | 1 |
| #10 | Steve Rhine | 1 |
| #11 | Ralph F. Gessner, Jr. | 1 |
| #12 | Thomas R. Fegette | 1 |
| #13 | Dennis A. Maasen | 1 |