Top Inventors at Environmental Projects All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Dale Lee Denham, Jr. | 9 |
| 2 | Roland Schmidt | 6 |
| 3 | Rudolph Pruszko | 5 |
| #4 | Wayne C. Hazen | 5 |
| #5 | David R. Baughman | 2 |
| #6 | Ralph B. Tacoma | 2 |
| #7 | Allan L. Turner | 2 |
| #8 | John S. Wold | 1 |
| #9 | Allen H. Moore | 1 |