Patent · US Active

Sound absorbing material and speaker box using same

US11109149B2 · kind B2 · utility

4Cited by

6References

11Claims

0Family size

Assignee

AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD. · CN

Inventors

Hongshu Feng · Lo Wu, CN
Hezhi Wang · Lo Wu, CN
Kun Tang · Bellevue, US
Guochuang Huang · Lo Wu, CN

Key dates

Filing date	Jul 26, 2019
Grant date	Aug 31, 2021
Priority date	—
Expiry date	Jul 26, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2201/029
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present disclosure provides a sound absorbing material. The sound absorbing material comprises MFI-structural-type zeolite. The MFI-structural-type zeolite comprises a framework, and the framework comprises SiO2 and AlO3, and the mass ratio of Si to Al in the framework is less than 200 and not less than 50. The present disclosure also provides a speaker box applying the sound absorbing material. The sound absorbing material provided by the present disclosure and the speaker box using the sound absorbing material can further improve the performance of the speaker box, reduce the failure of zeolite and improve the performance stability of the speaker box.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.