Issued Patents 2021
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11140475 | Sound absorbing material, method for process same and speaker using same | Kun Tang, Hongshu Feng, Jiqiang Dai | 2021-10-05 |
| 11109149 | Sound absorbing material and speaker box using same | Hongshu Feng, Kun Tang, Guochuang Huang | 2021-08-31 |
| 11014820 | Molecular sieve, preparation thereof and acoustic absorption material and speaker containing the same | Kun Tang, Hongshu Feng, Guochuang Huang | 2021-05-25 |
| 10939195 | Sound absorbing material and speaker box using same | Jiqiang Dai, Hongshu Feng, Guochuang Huang, Kun Tang | 2021-03-02 |