Invention Grant
- Patent Title: Acoustic composite
- Patent Title (中): 声学复合材料
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Application No.: US12991166Application Date: 2009-05-05
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Publication No.: US08381872B2Publication Date: 2013-02-26
- Inventor: Jonathan H. Alexander , David F. Slama
- Applicant: Jonathan H. Alexander , David F. Slama
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Lisa P. Fulton; James A. Baker
- International Application: PCT/US2009/042824 WO 20090505
- International Announcement: WO2009/137466 WO 20091112
- Main IPC: E04B1/82
- IPC: E04B1/82 ; G10K11/16 ; E04B1/74 ; G10K11/00
Abstract:
An acoustic composite comprises a flow resistive substrate having a solid acoustic barrier material bonded to at least a portion of a major surface of the flow resistive substrate; wherein the acoustic barrier material has a density greater than about 1 g/cm3 and the acoustic composite has a porosity between about 0.002% and about 50%.
Public/Granted literature
- US20110048850A1 ACOUSTIC COMPOSITE Public/Granted day:2011-03-03
Information query
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