Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8002975 | Filtration device with a pressure-activated means for bypassing serial filter layers | Gregory Straeffer, Stephen Dzengeleski | 2011-08-23 |
| 7650805 | Integrity testable multilayered filter device | Curtis Nauseda, Kevin Rautio | 2010-01-26 |
| 7513992 | Filtration device with pressure-activated means for bypassing serial filter layers | Gregory Straeffer, Stephen Dzengeleski | 2009-04-07 |