logo

For the Inventor, By the Inventor

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 11577971 B1

PDFFull Text
Date of Patent:
Feb. 14, 2023

Filed:

Sep. 29, 2017

Composition for forming reverse osmosis membrane protection layer, method for preparing reverse osmosis membrane using same, reverse osmosis membrane, and water treatment module

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Ayoung Lee, Daejeon, KR;

Sung Kyung Park, Daejeon, KR;

Chong Kyu Shin, Daejeon, KR;

Bong Ju Kwak, Daejeon, KR;

Assignee:

LG CHEM, LTD., Seoul, KR;

Attorney:

Dentons US LLP

Primary Examiner:

Bobby Ramdhanie

Assistant Examiner:

Donovan Bui-Huynh

Int. Cl.
CPC ...
C02F 1/44 (2006.01); B01D 61/02 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 69/12 (2006.01); B01D 71/56 (2006.01); C09D 129/04 (2006.01); B01D 71/38 (2006.01); B01D 71/06 (2006.01); B01D 71/52 (2006.01); C08J 7/04 (2020.01); B01D 69/10 (2006.01);
U.S. Cl.
CPC ...
C02F 1/441 (2013.01); B01D 61/025 (2013.01); B01D 67/0006 (2013.01); B01D 67/0088 (2013.01); B01D 69/02 (2013.01); B01D 69/12 (2013.01); B01D 69/125 (2013.01); B01D 71/06 (2013.01); B01D 71/38 (2013.01); B01D 71/52 (2013.01); B01D 71/56 (2013.01); C02F 1/44 (2013.01); C08J 7/0427 (2020.01); C09D 129/04 (2013.01); B01D 69/10 (2013.01); B01D 2323/30 (2013.01); B01D 2323/32 (2013.01); B01D 2323/40 (2013.01); B01D 2325/36 (2013.01); C08J 2379/08 (2013.01); C08J 2429/04 (2013.01); C08J 2471/02 (2013.01);
Abstract

The present specification provides a composition comprising a material of Chemical Formula 1: having a molecular weight of 500,000 to 700,000 where R1 and R2 are the same as or different from each other, and each independently is hydrogen, deuterium, or an alkyl group, and n is from 10,000 to 20,000, for forming a reverse osmosis membrane protective layer, a method for preparing a reverse osmosis membrane using the same, a reverse osmosis membrane and a water-treatment module.

Find Patent Forward Citations

Lee, Ayoung. (2023). Composition for forming reverse osmosis membrane protection layer, method for preparing reverse osmosis membrane using same, reverse osmosis membrane, and water treatment module (U.S. Patent No. 11577971). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11577971

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

Loading…