Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11109149 | Sound absorbing material and speaker box using same | Hongshu Feng, Hezhi Wang, Kun Tang | 2021-08-31 |
| 11014820 | Molecular sieve, preparation thereof and acoustic absorption material and speaker containing the same | Kun Tang, Hezhi Wang, Hongshu Feng | 2021-05-25 |
| 10939195 | Sound absorbing material and speaker box using same | Jiqiang Dai, Hezhi Wang, Hongshu Feng, Kun Tang | 2021-03-02 |