Patent · US Active

Sound absorbing material, method for process same and speaker using same

US11140475B2 · kind B2 · utility

2Cited by

5References

9Claims

0Family size

Assignee

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

Inventors

Kun Tang · Bellevue, US
Hongshu Feng · Lo Wu, CN
Jiqiang Dai · Lo Wu, CN
Hezhi Wang · Lo Wu, CN

Key dates

Filing date	Jul 26, 2019
Grant date	Oct 5, 2021
Priority date	—
Expiry date	Oct 27, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG10K11/165
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present disclosure provides a sound absorbing material. The sound absorbing material comprising MFI-structural-type molecular sieves, the MFI-structural-type molecular sieves comprises frameworks and extra-framework cations, the framework comprising SiO2 and a metal oxide MxOy containing a metal element M, wherein a molar ratio of Si/M is between 220 and 600 in the framework, the metal element M comprises aluminum, and the extra-framework cations are at least one of hydrogen ions, alkali metal ions and alkaline earth metals. The present also provides a method for preparing a sound absorbing material and a speaker box using the sound absorbing material.

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