IP Library › Granted Patent US 8,925,675
Granted Patent B2
US 8,925,675 · App. 14/033,565 · Granted Jan 6, 2015

Compound membrane and acoustic device using same

Inventors: Xing-Zhi Huang (Shenzhen, CN); Jing He (Shenzhen, CN)
Assignees: AAC Acoustic Technologies (Shenzhen) Co., Ltd.; American Audio Components (Shenzhen) Co., Ltd.
H04R7/06H04R7/125H04R2307/025H04R2307/204
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Quick Facts
Patent No.
US 8,925,675
App. No.
14/033,565
Granted
Jan 6, 2015
Kind
B2
Abstract

The present disclosure provides a compound membrane and an acoustic device including such a compound membrane. The compound membrane includes a polyetherimide film, and a thermoplastic polyurethance elastomer attached to one surface of the polyetherimide film.

Claims (6)

1. A compound membrane comprising:

a polyetherimide film; and

a thermoplastic polyurethane elastomer attached to one surface of the polyetherimide film; and

wherein the compound membrane comprises a central portion and a peripheral portion surrounding the central portion, the central portion is formed by a single layer of the polyetherimide film and the peripheral portion is formed by the compound of the polyetherimide film and the thermoplastic polyurethane elastomer.

2. An acoustic device comprising:

a compound membrane as described in claim 1 .

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 24, 2017
From: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
To: AAC TECHNOLOGIES PTE. LTD.
Reel/Frame 042319/0113 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 23, 2013
From: HUANG, XING-ZHI; HE, JING
To: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.; AMERICAN AUDIO COMPONENT (SHENZHEN) CO., LTD.
Reel/Frame 031255/0875 →
Priority Claims (1)
CN 2012 2 0498023 U · Sep 26, 2012 · national
Continuity (1)
Related Publication 20140083795A1 · Mar 27, 2014