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.:
Date of Patent:
Feb. 08, 2022
Filed:
Nov. 07, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Byoungsoo Lee, Daejeon, KR;
Sora Bang, Daejeon, KR;
Chong Kyu Shin, Daejeon, KR;
Keun Won Song, Daejeon, KR;
Hyungbae Gil, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01); B01D 67/00 (2006.01); B01D 69/10 (2006.01); B01D 71/22 (2006.01);
U.S. Cl.
CPC ...
B01D 67/0002 (2013.01); B01D 53/228 (2013.01); B01D 69/10 (2013.01); B01D 71/22 (2013.01); B01D 2323/02 (2013.01);
Abstract
Provided is a method for preparing a gas separation membrane, the method including forming a porous layer by coating a hydrophilic polymer solution on a porous substrate; and forming an active layer by coating a composition for forming an active layer including a polymer of Chemical Formula 1 on the porous layer,