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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 12119513 B1

PDFFull Text
Date of Patent:
Oct. 15, 2024

Filed:

Apr. 03, 2018

Separator for lithium-ion secondary battery

Applicants:

Asahi Kasei Kabushiki Kaisha, Tokyo, JP;

Celgard, Llc, Charlotte, NC (US);

Inventors:

Takahiko Kondo, Charlotte, NC (US);

Kazunori Uchida, Tokyo, JP;

Shinya Hamasaki, Tokyo, JP;

Assignees:

Asahi Kasei Kabushiki Kaisha, Tokyo, JP;

Celgard, LLC, Charlotte, NC (US);

Attorney:

Hammer & Assocates, P.C.

Primary Examiner:

Brian R Ohara

Assistant Examiner:

Michelle T Leonard

Int. Cl.
CPC ...
H01M 50/44 (2021.01); B29C 55/00 (2006.01); B29C 55/04 (2006.01); B29C 55/12 (2006.01); B29K 23/00 (2006.01); B29K 105/04 (2006.01); B29L 31/34 (2006.01); H01M 10/0525 (2010.01); H01M 50/403 (2021.01); H01M 50/406 (2021.01); H01M 50/417 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01);
U.S. Cl.
CPC ...
H01M 50/44 (2021.01); B29C 55/005 (2013.01); B29C 55/04 (2013.01); B29C 55/12 (2013.01); H01M 10/0525 (2013.01); H01M 50/417 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); B29K 2023/12 (2013.01); B29K 2105/041 (2013.01); B29L 2031/3468 (2013.01); H01M 50/403 (2021.01); H01M 50/406 (2021.01);
Abstract

Problem: The invention provides a separator for a lithium-ion secondary battery exhibiting excellent strength, wettability with nonaqueous electrolyte solutions, voltage endurance and cycle characteristics in lithium-ion secondary batteries, and a method of increasing the puncture depth of the separator. Solution: A separator for a lithium-ion secondary battery is formed of a microporous film comprising a polyolefin resin (A) as a major component, and a resin (B), at least portions of the surfaces of the micropores in the microporous film being coated with resin (B).

Find Patent Forward Citations

Kondo, Takahiko. (2024). Separator for lithium-ion secondary battery (U.S. Patent No. 12119513). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12119513

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

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