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:
Oct. 20, 2026
Filed:
Nov. 11, 2021
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 50/403 (2021.01); C08K 3/013 (2018.01); C09J 9/00 (2006.01); H01M 10/052 (2010.01); H01M 50/417 (2021.01); H01M 50/431 (2021.01); H01M 50/44 (2021.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/46 (2021.01); H01M 50/491 (2021.01);
U.S. Cl.
CPC ...
H01M 50/403 (2021.01); C08K 3/013 (2018.01); C09J 9/00 (2013.01); H01M 10/052 (2013.01); H01M 50/417 (2021.01); H01M 50/431 (2021.01); H01M 50/44 (2021.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/461 (2021.01); H01M 50/491 (2021.01);
Abstract
A separator for a lithium secondary battery, a method of making the same, and a lithium secondary battery including the same is disclosed herein. In some embodiments, a separator for a lithium secondary battery including a porous polyolefin substrate having a tan(δ) of 0.3 or less. The tan(δ) is determined by Formula 1 at a temperature of 230° C. and an angular frequency of 0.1 rad/s:tan(δ)= [Formula 1]
Mun, Sung. (2026). Separator for lithium secondary battery and method for manufacturing the same (U.S. Patent No. 12770973). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12770973
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile