Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11135394 | Humidifier and/or flow generator for CPAP device | Ian Malcolm Smith, Perry David Lithgow, Dan Kao | 2021-10-05 |
| 11013875 | Low cost CPAP flow generator and humidifier assembly | Zhuo Ran Tang, Cem Tarakci, Kenneth Lee, Steven Paul Farrugia, Dmitri Anatolievich Doudkine +1 more | 2021-05-25 |
| 10881820 | Breathable gas apparatus with humidifier | Geoffrey Crumblin, Michael Thomas Janiak, Dan Kao, Barton John Kenyon, Perry David Lithgow +5 more | 2021-01-05 |