Patent · US Active

Loudspeaker system with improved sound

US9794659B2 · kind B2 · utility

1Cited by

0References

38Claims

0Family size

Assignees

Sound Solutions International Co., Ltd. · CN
NAUTILUS CAPITAL CORPORATION · US

Inventors

Maria Papakyriacou · Wien, AT
Johannes Kobler · Munich, DE
Jürgen Sauer · Munich, DE

Key dates

Filing date	Jun 3, 2015
Grant date	Oct 17, 2017
Priority date	—
Expiry date	Jun 28, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A loudspeaker device is presented which includes a zeolite material comprising zeolite particles having a silicon to aluminum mass ratio of at least 200. For an increased pore fraction of pores with a diameter in a range between 0.7 micrometer and 30 micrometer shows an increased shift of the resonance frequency down to lower frequencies has been observed.

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