Top Inventors at Pollution Control Industries All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Stanley F. Curtis | 4 |
| 2 | William H. Herd, Jr. | 3 |
| 3 | John W. Hansen | 1 |
| #4 | Kenneth E. Carle | 1 |
| #5 | Robert W. Jones | 1 |
| #6 | Vernon T. Mullican | 1 |
| #7 | Walter H. Lawrence | 1 |
| #8 | William O. Grefe | 1 |
| #9 | William L. Kenly, V | 1 |
| #10 | Kevin P. Prunsky | 1 |