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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 12755982 B1

PDFFull Text
Date of Patent:
Oct. 06, 2026

Filed:

Feb. 08, 2021

Non-aqueous electrolyte secondary battery

Applicant:

Sanyo Electric Co., Ltd., Osaka, JP;

Inventors:

Akihiro Tabushi, Hyogo, JP;

Yuu Takanashi, Hyogo, JP;

Assignee:

SANYO Electric Co., Ltd., Osaka, JP;

Attorney:

WHDA, LLP

Primary Examiner:

Matthew T Martin

Assistant Examiner:

Kevin undefined Song

Int. Cl.
CPC ...
H01M 4/62 (2006.01); H01M 4/02 (2006.01); H01M 4/131 (2010.01); H01M 4/505 (2010.01); H01M 10/04 (2006.01); H01M 50/489 (2021.01);
U.S. Cl.
CPC ...
H01M 4/628 (2013.01); H01M 4/131 (2013.01); H01M 4/505 (2013.01); H01M 10/0431 (2013.01); H01M 50/489 (2021.01); H01M 2004/028 (2013.01);
Abstract

This non-aqueous electrolyte secondary battery has: an electrode body formed by winding, in a flat shape, a positive electrode and a negative electrode with a separator interposed therebetween; and a non-aqueous electrolyte. The positive electrode has a positive electrode mixture layer containing a positive electrode active material. In the positive electrode mixture layer, 0.10-0.30 mass % of ceramic particles are added, the volume-based median size (D50) of the ceramic particles is 0.5 μm or less, the air permeability of the separator is 165-310 sec/100 ml, and the air permeability of a flat portion of the separator with respect to the air permeability of a curved portion of the separator is 120-140%.

Find Patent Forward Citations

Tabushi, Akihiro. (2026). Non-aqueous electrolyte secondary battery (U.S. Patent No. 12755982). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12755982

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