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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 12758925 B1

PDFFull Text
Date of Patent:
Oct. 13, 2026

Filed:

May. 30, 2023

Method for preparing self-supporting composite nanofiltration membrane

Applicant:

Tiangong University, Tianjin, CN;

Inventors:

Hailiang Liu, Tianjin, CN;

Yumin Sun, Tianjin, CN;

Hao Cui, Tianjin, CN;

Yonghui Wang, Tianjin, CN;

Yang Qin, Tianjin, CN;

Assignee:

Tiangong University, Tianjin, CN;

Attorney:

Bayramoglu Law Offices LLC

Primary Examiner:

Allison G Fitzsimmons

Int. Cl.
CPC ...
B01D 69/12 (2006.01); B01D 61/02 (2006.01);
U.S. Cl.
CPC ...
B01D 69/1251 (2022.08); B01D 61/027 (2013.01); B01D 2323/081 (2022.08); B01D 2323/21819 (2022.08); B01D 2323/48 (2013.01); B01D 2325/02834 (2022.08);
Abstract

A method for preparing a self-supporting composite nanofiltration membrane is provided. A porous graphene-based two-dimensional sheet material is prepared by taking amino graphene quantum dots as the main body and subjecting them to an interfacial polymerization reaction with polyacyl chloride, and then the porous graphene-based two-dimensional sheet material is encapsulated in-situ with polyamide by an in-situ encapsulating technology to prepare a self-supporting porous graphene/polyamide separation layer with excellent permeability and high selectivity.

Find Patent Forward Citations

Liu, Hailiang. (2026). Method for preparing self-supporting composite nanofiltration membrane (U.S. Patent No. 12758925). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12758925

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

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