Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11145081 | Voice prompting method of safety warning | Hui-Chen Chen, Chieh-Yuan Huang | 2021-10-12 |
| 11086211 | Masks and methods of forming the same | Chih-Chiang Tu, Chun-Lang Chen | 2021-08-10 |