Gas-permeable filter provided with oil repellency

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United States of America Patent

PATENT NO 9508971
APP PUB NO 20140023895A1
SERIAL NO

14001813

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Abstract

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A gas-permeable filter provided with oil repellency is provided. The gas-permeable filter includes a porous membrane having a surface coated with an oil-repellent agent. The oil-repellent agent includes a linear fluorine-containing hydrocarbon group represented by —R1C5F10CH2C4F9 or —R2C6F13, and the porous membrane is a stretched polytetrafluoroethylene (PTFE) porous membrane. Here, R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group. The gas-permeable filter is provided with oil repellency without significant reduction in gas permeability.

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Patent Owner(s)

Patent OwnerAddress
NITTO DENKO CORPORATION1-1-2 SHIMOHOZUMI IBARAKI-SHI OSAKA 5678680

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ikeyama, Yoshiki Osaka, JP 12 228
Kosaka, Naofumi Osaka, JP 14 11
Maruoka, Nobuaki Osaka, JP 12 33
Onohara, Asuka Osaka, JP 4 18

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