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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 12744284 B1

PDFFull Text
Date of Patent:
Sep. 22, 2026

Filed:

Nov. 30, 2021

Separator for power storage device, and power storage device including same

Applicant:

Asahi Kasei Battery Separator Corporation, Tokyo, JP;

Inventors:

Hitoshi Takamori, Tokyo, JP;

Mayu Kidena, Tokyo, JP;

Kazushi Misawa, Tokyo, JP;

Assignee:

Asahi Kasei Battery Separator Corporation, Tokyo, JP;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Tiffany Legette

Assistant Examiner:

Monique M Wills

Int. Cl.
CPC ...
H01M 50/00 (2021.01); H01G 9/02 (2006.01); H01M 50/417 (2021.01); H01M 50/42 (2021.01); H01M 50/446 (2021.01); H01M 50/449 (2021.01); H01M 50/489 (2021.01);
U.S. Cl.
CPC ...
H01M 50/446 (2021.01); H01G 9/02 (2013.01); H01M 50/417 (2021.01); H01M 50/42 (2021.01); H01M 50/449 (2021.01); H01M 50/489 (2021.01);
Abstract

The present disclosure provides: a separator which is for a power storage device and has high adhesive force to an electrode and a small thermal shrinkage rate; and a power storage device including the same. A separator for a power storage device according to the present disclosure comprises: a base material of a polyolefin microporous film; and a coating layer disposed on at least one surface of the base material, wherein the coating layer contains an inorganic filler and a particulate polymer protruding to a position that corresponds to at least 0.1 times the thickness of the coating layer.

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Takamori, Hitoshi. (2026). Separator for power storage device, and power storage device including same (U.S. Patent No. 12744284). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12744284

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

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