Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11141315 | Noise-reducing earmuff | Ze Wang, Xiaofeng Wen | 2021-10-12 |
| 11128945 | Loudspeaker and method for improving directivity, head-mounted device and method | Ze WANG, Hongwei Zhou, Dehua Li | 2021-09-21 |