Patent · US Active

Molecular sieve, preparation thereof and acoustic absorption material and speaker containing the same

US11014820B2 · kind B2 · utility

1Cited by

0References

19Claims

0Family size

Assignee

AAC Technologies Pte. Ltd. · SG

Inventors

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

Key dates

Filing date	Dec 30, 2018
Grant date	May 25, 2021
Priority date	—
Expiry date	Dec 30, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2004/64
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present disclosure relates to a molecular sieve, preparation thereof and acoustic absorption material and speaker containing the same. The molecular sieve having an MFI-structure, comprising a framework and an off-framework cation, wherein the framework comprises SiO2 and a metal oxide MxOy with M comprising boron, gallium or aluminium; the off-framework cation is at least one of hydrogen ion, alkali metal ion and alkaline earth metal ion. The molecular herein can effectively prevent the failure of the molecular sieve and improve the performance stability of the speaker.

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