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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 9839879 B1

PDFFull Text
Date of Patent:
Dec. 12, 2017

Filed:

Dec. 24, 2014

Forward osmosis membrane for seawater desalination and method for preparing the same

Applicant:

Woongjin Chemical Co., Ltd., Gumi-si, KR;

Inventors:

Sung Dae Chi, Hwaseong-si, KR;

Bong Jun Cha, Seoul, KR;

Jong Hwa Lee, Anyang-si, KR;

Doo Ri Kim, Seoul, KR;

Su Jeong Lim, Suwon-si, KR;

Assignee:

Woongjin Chemical Co., Ltd., Gum-si, KR;

Attorneys:

Walter | Haverfield LLP

D. Peter Hochberg

Sean F. Mellino

Primary Examiner:

Ana Fortuna

Int. Cl.
CPC ...
B01D 39/00 (2006.01); B01D 29/00 (2006.01); B01D 29/46 (2006.01); B01D 39/14 (2006.01); B01D 61/00 (2006.01); B01D 69/12 (2006.01); B01D 71/56 (2006.01); B01D 71/16 (2006.01); B29C 41/00 (2006.01); B29C 41/22 (2006.01); B29C 41/42 (2006.01); B01D 67/00 (2006.01); B01D 69/10 (2006.01); B01D 71/68 (2006.01); B29K 77/00 (2006.01); B29K 33/20 (2006.01); B29K 81/00 (2006.01); B29L 31/00 (2006.01); B29L 9/00 (2006.01); B01D 71/38 (2006.01); B01D 71/40 (2006.01); B01D 71/42 (2006.01); B01D 71/44 (2006.01); B01D 71/52 (2006.01); B01D 71/60 (2006.01);
U.S. Cl.
CPC ...
B01D 61/002 (2013.01); B01D 67/0006 (2013.01); B01D 69/10 (2013.01); B01D 69/12 (2013.01); B01D 69/125 (2013.01); B01D 71/16 (2013.01); B01D 71/56 (2013.01); B29C 41/003 (2013.01); B29C 41/22 (2013.01); B29C 41/42 (2013.01); B01D 61/00 (2013.01); B01D 71/38 (2013.01); B01D 71/40 (2013.01); B01D 71/42 (2013.01); B01D 71/44 (2013.01); B01D 71/52 (2013.01); B01D 71/60 (2013.01); B01D 71/68 (2013.01); B01D 2323/30 (2013.01); B01D 2325/022 (2013.01); B01D 2325/025 (2013.01); B01D 2325/026 (2013.01); B01D 2325/26 (2013.01); B01D 2325/36 (2013.01); B29K 2033/20 (2013.01); B29K 2077/00 (2013.01); B29K 2081/06 (2013.01); B29K 2995/0092 (2013.01); B29L 2009/00 (2013.01); B29L 2031/755 (2013.01);
Abstract

A forward osmosis membrane for seawater desalination and a method for preparing the same. The forward osmosis membrane has a composite membrane structure including a nonwoven fabric layer; a hydrophilic polymer layer; and a polyamide layer. The hydrophilic polymer layer formed on the nonwoven fabric layer facilitates an inflow of water from the feed water to the draw solution to enhance flux and realize high water permeability in the direction of osmosis. The polyamide layer not only secures contamination resistance and chemical resistance but also minimizes the back diffusion of salts of the draw solution in the direction of reverse osmosis. Hence, the forward osmosis membrane of the present invention is greatly useful for desalination of high-concentration seawater.

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Chi, Sung. (2017). Forward osmosis membrane for seawater desalination and method for preparing the same (U.S. Patent No. 9839879). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9839879

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