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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 12548852 B1

PDFFull Text
Date of Patent:
Feb. 10, 2026

Filed:

Feb. 12, 2021

Ceramic cross-linked coating on a porous membrane and methods for making the same

Applicant:

Celgard, Llc, Charlotte, NC (US);

Inventors:

Wenbin Yin, Charlotte, NC (US);

James Rapley, Concord, NC (US);

Xiang Yu, Indian Land, SC (US);

Stefan Reinartz, Waxhaw, NC (US);

Yuji Masui, Shizuoka, JP;

Daisuke Narushima, Kanagawa, JP;

Yuya Iwasaki, Shiga, JP;

Assignee:
Attorneys:

J. Clinton Wimbish

Maynard Nexsen PC

Primary Examiner:

Anca Eoff

Int. Cl.
CPC ...
C09D 7/65 (2018.01); C07D 303/16 (2006.01); C09D 4/00 (2006.01); C09D 7/43 (2018.01); C09D 7/45 (2018.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 133/14 (2006.01); C09D 171/02 (2006.01); H01M 10/42 (2006.01); H01M 50/403 (2021.01); H01M 50/414 (2021.01); H01M 50/42 (2021.01); H01M 50/429 (2021.01); H01M 50/434 (2021.01); H01M 50/443 (2021.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01);
U.S. Cl.
CPC ...
H01M 50/451 (2021.01); C07D 303/16 (2013.01); C09D 4/00 (2013.01); C09D 7/43 (2018.01); C09D 7/45 (2018.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 7/65 (2018.01); C09D 133/14 (2013.01); C09D 171/02 (2013.01); H01M 10/4235 (2013.01); H01M 50/403 (2021.01); H01M 50/414 (2021.01); H01M 50/42 (2021.01); H01M 50/4295 (2021.01); H01M 50/434 (2021.01); H01M 50/443 (2021.01); H01M 50/446 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01);
Abstract

A porous membrane having a cross-linked ceramic coating on at least one side thereof is disclosed. The coated porous membrane may be used as a battery separator, particularly a battery separator for a lithium ion battery. The coating includes at least a cross-linker and a ceramic. The cross-linker may be a particulate polymeric binder cross-linker, a PEO (PEG) cross-linker, or a POSS cross-linker. The coated membrane exhibits improved properties that may be favorable for its use as a battery separator. For example, the coated porous membrane may exhibit improved shrinkage properties and high temperature resistance.

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