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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 11101524 B1

PDFFull Text
Date of Patent:
Aug. 24, 2021

Filed:

Feb. 08, 2017

Method for preparing lithium-ion battery separator

Applicant:

Shanghai Energy New Materials Technology Co., Ltd., Shanghai, CN;

Inventors:

Alex Cheng, Shanghai, CN;

Xiaoming Su, Shanghai, CN;

Weiqiang Wang, Shanghai, CN;

Fangbo He, Shanghai, CN;

Yongle Chen, Shanghai, CN;

Assignee:

SHANGHAI ENERGY NEW MATERIALS TECHNOLOGY CO., LTD., Shanghai, CN;

Attorneys:

Burns & Levinson, LLP

Joseph M Maraia

Primary Examiner:

Jeffrey M Wollschlager

Assistant Examiner:

Xue H Liu

Int. Cl.
CPC ...
B29C 55/16 (2006.01); H01M 50/403 (2021.01); B29C 41/00 (2006.01); B29C 55/00 (2006.01); B29C 67/20 (2006.01); B29C 71/02 (2006.01); H01M 10/0525 (2010.01); H01M 50/411 (2021.01); B29L 31/34 (2006.01);
U.S. Cl.
CPC ...
H01M 50/403 (2021.01); B29C 41/003 (2013.01); B29C 55/005 (2013.01); B29C 55/16 (2013.01); B29C 67/202 (2013.01); B29C 71/02 (2013.01); H01M 10/0525 (2013.01); H01M 50/411 (2021.01); B29K 2023/06 (2013.01); B29L 2031/3468 (2013.01);
Abstract

A method for preparing a lithium-ion battery separator is disclosed. The method comprises: cooling and shaping a liquid-phase stabilization system containing polyethylene, stretching to enlarge pores, extracting with a solvent, and heat-setting to obtain a lithium-ion battery separator, wherein the stretching includes pre-stretching and synchronous bidirectional stretching, and the pre-stretching is completed before the synchronous bidirectional stretching.

Find Patent Forward Citations

Cheng, Alex. (2021). Method for preparing lithium-ion battery separator (U.S. Patent No. 11101524). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11101524

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

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