Invention Grant
- Patent Title: Compound membrane, method of manufacturing the same, and acoustic device
- Patent Title (中): 复合膜，其制造方法和声学装置
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Application No.: US12513881Application Date: 2007-10-16
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Publication No.: US08284964B2Publication Date: 2012-10-09
- Inventor: Susanne Windischberger , Josef Lutz , Ewald Frasl
- Applicant: Susanne Windischberger , Josef Lutz , Ewald Frasl
- Applicant Address: SG Singapore
- Assignee: Knowles Electronics Asia PTE. Ltd.
- Current Assignee: Knowles Electronics Asia PTE. Ltd.
- Current Assignee Address: SG Singapore
- Agency: Dykema Gossett PLLC
- Agent Steven McMahon Zeller
- International Application: PCT/IB2007/054210 WO 20071016
- International Announcement: WO2008/056287 WO 20080515
- Main IPC: H04R25/00
- IPC: H04R25/00 ; H04R7/00
Abstract:
A compound membrane (100) for an acoustic device (200), the compound membrane (100) comprising a first layer (101) and a second layer (102), wherein a value of Young's modulus of the second layer (102) does not vary more than essentially 30% in a temperature range between essentially −20° C. and essentially +85° C.
Public/Granted literature
- US20100040246A1 COMPOUND MEMBRANE, METHOD OF MANUFACTURING THE SAME, AND ACOUSTIC DEVICE Public/Granted day:2010-02-18
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