Issued Patents 2019
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10321215 | Earphone | Qigao Chen, Jiangtao Xu | 2019-06-11 |
| 10306349 | Earphone | Yanpeng Zhao, Qigao Chen, Ping Xie | 2019-05-28 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10321215 | Earphone | Qigao Chen, Jiangtao Xu | 2019-06-11 |
| 10306349 | Earphone | Yanpeng Zhao, Qigao Chen, Ping Xie | 2019-05-28 |