Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12017099 | Versatile and multi-purpose breathing mask | — | 2024-06-25 |
| 11904192 | Versatile and multi-purpose breathing mask | — | 2024-02-20 |
| D986409 | Breathing apparatus | Alexander Virr, John Michael Snow, Dan Kao, Damian Charles Johnson | 2023-05-16 |
| 10786691 | Breathing apparatus | Dan Kao, Alexander Virr, John Michael Snow, Damian Charles Johnson | 2020-09-29 |
| 10188880 | Filter assembly for a breathing apparatus | Alexander Virr, Dan Kao, John Michael Snow, Damian Charles Johnson | 2019-01-29 |
| 9248248 | Respirator | Alexander Virr, Dan Kao, John Michael Snow, Junning Chen | 2016-02-02 |