Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11492905 | Lidar-based convergence deformation monitoring system for surrounding rock around TBM shield region | Quansheng Liu, Xianze Xu, Tong Zheng, Xiaoping Zhang, Fengqiu Xu | 2022-11-08 |
| 8995704 | Micro-speaker | Li-zhu Xi, Xiong Zhang | 2015-03-31 |
| 8950545 | Compound membrane and acoustic device using same | Jing He | 2015-02-10 |
| 8925675 | Compound membrane and acoustic device using same | Jing He | 2015-01-06 |
| 8848961 | Speaker box with U-shaped bending channels | Xu Yan | 2014-09-30 |
| 8705788 | Speaker and method for fabricating same | Chao Xu, Rong-Lin Ling-Hu, Xiong Zhang | 2014-04-22 |