Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7824549 | High efficiency grit removal system | Stephen B. Wilcher, Thomas W. Quimby | 2010-11-02 |
| 7510650 | Perforated plate element screen with sealed element design | Stephen B. Wilcher, Nathan L. Panek | 2009-03-31 |
| 6997328 | Grit removal assemblies | Stephen B. Wilcher | 2006-02-14 |