Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12378993 | Bearing wear monitoring device for circular clarifier drive | Allen Lepak | 2025-08-05 |
| 11883764 | Sludge withdrawal mechanism for wasting and returning settled sludge from secondary clarifier with granular sludge | Donald J. Thiel, GOVARDHAN R. KATTA, Allen Lepak | 2024-01-30 |