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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9630150 B1

PDFFull Text
Date of Patent:
Apr. 25, 2017

Filed:

Jul. 26, 2013

Porous polytetrafluoroethylene membrane, method for producing the same, gas-permeable membrane and ventilation member using the same

Applicant:

Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;

Inventors:

Masaaki Mori, Osaka, JP;

Yoshiki Ikeyama, Osaka, JP;

Assignee:

NITTO DENKO CORPORATION, Osaka, JP;

Attorney:

Hamre, Schumann, Mueller & Larson, P.C.

Primary Examiner:

Anthony Shumate

Int. Cl.
CPC ...
B01D 53/22 (2006.01); B01D 67/00 (2006.01); B01D 71/36 (2006.01); C08J 7/04 (2006.01); B01D 69/06 (2006.01); B32B 5/02 (2006.01); B32B 5/16 (2006.01); B32B 15/08 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 27/14 (2006.01); B32B 27/28 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01);
U.S. Cl.
CPC ...
B01D 67/0088 (2013.01); B01D 67/0027 (2013.01); B01D 69/06 (2013.01); B01D 71/36 (2013.01); B32B 5/022 (2013.01); B32B 5/024 (2013.01); B32B 5/16 (2013.01); B32B 15/08 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/14 (2013.01); B32B 27/281 (2013.01); B32B 27/32 (2013.01); B32B 27/322 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); C08J 7/047 (2013.01); B01D 2323/04 (2013.01); B01D 2325/24 (2013.01); B01D 2325/38 (2013.01); B32B 2255/26 (2013.01); B32B 2264/0257 (2013.01); B32B 2307/724 (2013.01); B32B 2307/7265 (2013.01); B32B 2457/00 (2013.01); C08J 2327/18 (2013.01); C08J 2433/16 (2013.01);
Abstract

The present invention provides a porous polytetrafluoroethylene membrane having a surface coated with a liquid-repellent agent. In this porous polytetrafluoroethylene membrane, the liquid-repellent agent is a polymer obtained by polymerization of monomers consisting essentially of CH═CHCOOCHCHCF. This porous polytetrafluoroethylene membrane is suitable for use as a gas-permeable membrane that allows passage of gases but prevents entry of liquids and/or dust, specifically as a waterproof sound-transmitting membrane, a waterproof gas-permeable membrane, or a dustproof gas-permeable membrane.

Find Patent Forward Citations

Mori, Masaaki. (2017). Porous polytetrafluoroethylene membrane, method for producing the same, gas-permeable membrane and ventilation member using the same (U.S. Patent No. 9630150). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9630150

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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