Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7759123 | Removing surface deposits of concentrated collected particles | Charles J. Call, Patrick Call, Vanessa M. Kenning, Andrew Kamholz | 2010-07-20 |
| 6938777 | Method for removing surface deposits of concentrated collected particles | Charles J. Call, Patrick Call, Vanessa M. Kenning, Andrew Kamholz | 2005-09-06 |
| 6887710 | Robust system for screening mail for biological agents | Charles J. Call, Andrew Kamholz | 2005-05-03 |