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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 12521658 B1

PDFFull Text
Date of Patent:
Jan. 13, 2026

Filed:

Nov. 26, 2020

Ultra-hydrophilic filtration filter for oil-water separation and method for manufacturing same

Applicant:

Postech Research and Business Development Foundation, Pohang-si, KR;

Inventors:

Woonbong Hwang, Seoul, KR;

Handong Cho, Daejeon, KR;

Seongmin Kim, Cheonan-si, KR;

Assignee:

POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION, Pohang-si, KR;

Attorney:

LEX IP MEISTER, PLLC

Primary Examiner:

Thuan D Dang

Int. Cl.
CPC ...
B01D 39/16 (2006.01); B01D 17/02 (2006.01); C08J 3/24 (2006.01); D06M 15/285 (2006.01); D06M 15/59 (2006.01); D06M 101/20 (2006.01); D06M 101/22 (2006.01);
U.S. Cl.
CPC ...
B01D 39/163 (2013.01); B01D 17/02 (2013.01); C08J 3/24 (2013.01); D06M 15/285 (2013.01); D06M 15/59 (2013.01); B01D 2239/0421 (2013.01); B01D 2239/0492 (2013.01); B01D 2239/10 (2013.01); C08J 2379/08 (2013.01); D06M 2101/20 (2013.01); D06M 2101/22 (2013.01); D06M 2400/01 (2013.01);
Abstract

A method for ultra-hydrophilic surface treatment of a polymer fiber substrate according to the present invention comprises the steps of: forming a thermosetting coating layer on the surface of a polymer substrate; forming a carboxylate group (—COO—) on the surface of the thermosetting coating layer; forming an amide bond (—CONH—) between the thermosetting coating layer and hydrogel monomers; and forming a hydrophilic polymer layer by crosslinking the hydrogel monomers.

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Hwang, Woonbong. (2026). Ultra-hydrophilic filtration filter for oil-water separation and method for manufacturing same (U.S. Patent No. 12521658). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12521658

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