Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11679218 | Oxygen masks | — | 2023-06-20 |
| 10646675 | Oxygen masks | — | 2020-05-12 |
| 7895938 | Apparatus and method for steam disinfection of liquid dispensing machine | Chung-Chien Chang, Tung-Sheng Chang, Chung-Hsing Lee, Jean Saint Germain | 2011-03-01 |