Waterproof sound-permeable membrane and electronic device

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United States of America Patent

PATENT NO 9877094
SERIAL NO

15027965

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Abstract

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Provides is a waterproof sound-permeable membrane (10) adapted to permit passage of sound and prevent entry of water. The waterproof sound-permeable membrane (10) includes a sound-permeation region (11) having a polytetrafluoroethylene (PTFE) membrane (20). The polytetrafluoroethylene membrane (20) has an average pore diameter of 0.02 μm or more and 0.1 μm or less as measured according to ASTM F316-86 and has a porosity of 5% or more and 25% or less. The waterproof sound-permeable membrane (10) is suitable for application to an electronic device containing an acoustic device.

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Patent Owner(s)

  • NITTO DENKO CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mori, Masaaki Osaka, JP 101 772
Tachibana, Toshimitsu Osaka, JP 27 219

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