Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7524311 | Automatic high negative pressure relief valve and chest drainage units using same | Trinh Phung | 2009-04-28 |
| 6770062 | Automatic high negative pressure relief valve and chest drainage units using same | Trinh Phung | 2004-08-03 |