Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074648 | Respiratory protection device | James R. Betz, Andrew S. Viner, Scott A. Larson, David M. Castiglione | 2011-12-13 |
| 7594510 | Respiratory protection device | James R. Betz, Andrew S. Viner, Scott A. Larson, David M. Castiglione | 2009-09-29 |
| 7328700 | Respiratory system and method of use | Derek S. Baker | 2008-02-12 |