Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5802992 | Sludge processor | — | 1998-09-08 |
| 5660124 | Sludge processor | — | 1997-08-26 |
| 4681682 | Air flotation clarifier | Harold R. White | 1987-07-21 |
| 4477939 | Removable sludge cleaner for tanks | Harold R. White | 1984-10-23 |
| 4476018 | Field assembled clarifier | Harold R. White | 1984-10-09 |