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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 12312442 B1

PDFFull Text
Date of Patent:
May. 27, 2025

Filed:

Dec. 19, 2019

Method for separating organic zinc catalyst using filtering membrane

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Kyung Min Min, Daejeon, KR;

Sung Kyoung Kim, Daejeon, KR;

Seung Young Park, Daejeon, KR;

Sang Cheol Shin, Daejeon, KR;

Assignee:

LG Chem, Ltd., Seoul, KR;

Attorney:

Bryan Cave Leighton Paisner LLP

Primary Examiner:

Frances Tischler

Int. Cl.
CPC ...
C08G 64/40 (2006.01); B01D 67/00 (2006.01); B01D 69/10 (2006.01); B01D 69/12 (2006.01); B01D 71/10 (2006.01); B01D 71/26 (2006.01); B01J 31/12 (2006.01); C08G 64/34 (2006.01);
U.S. Cl.
CPC ...
C08G 64/406 (2013.01); B01D 67/00931 (2022.08); B01D 69/107 (2022.08); B01D 69/12 (2013.01); B01D 71/10 (2013.01); B01D 71/261 (2022.08); B01D 71/262 (2022.08); B01J 31/12 (2013.01); C08G 64/34 (2013.01); B01D 2311/14 (2013.01); B01D 2325/0283 (2022.08);
Abstract

The present disclosure relates to a method for separating an organic zinc catalyst dispersed in a polyalkylene carbonate resin solution by filtering the polyalkylene carbonate resin solution using a composite filtering membrane, which is a composite material comprising a hydroxyl group-containing material and polyolefin material and has a form in which one or both surfaces of the polyolefin material is coated with the hydroxyl group-containing material.

Find Patent Forward Citations

Min, Kyung. (2025). Method for separating organic zinc catalyst using filtering membrane (U.S. Patent No. 12312442). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12312442

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

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