Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9607597 | Particulate sound absorption board and preparation method thereof | Weixin Qian | 2017-03-28 |
| 9607599 | Particulate sound barrier and sound absorption/insulation board thereof | Weixin Qian | 2017-03-28 |