Sound absorption material, method of making the same and speaker box filled with the same
US11950048B2 · kind B2 · utility
0Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2022 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Nov 11, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/029
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention discloses a sound absorption material including an organic frame material; a binder; a thickener; and a plurality of sound absorption grains attached to the organic frame material via the binder, having a grain size in a range of 10-100 μm. The stability and the sound absorption performance of the sound absorption material have been effectively improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.