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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 12770908 B1

PDFFull Text
Date of Patent:
Oct. 20, 2026

Filed:

Jan. 22, 2021

Non-aqueous electrolytic secondary battery

Applicant:

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

Inventors:

Nobuhiro Sakitani, Tokushima, JP;

Takaharu Morikawa, Osaka, JP;

Assignee:

PANASONIC ENERGY CO., LTD., Osaka, JP;

Attorney:

WHDA, LLP

Primary Examiner:

Matthew T Martin

Assistant Examiner:

Kevin undefined Song

Int. Cl.
CPC ...
H01M 10/04 (2006.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 4/70 (2006.01); H01M 50/46 (2021.01);
U.S. Cl.
CPC ...
H01M 10/0431 (2013.01); H01M 4/0404 (2013.01); H01M 4/386 (2013.01); H01M 4/622 (2013.01); H01M 4/70 (2013.01); H01M 50/46 (2021.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract

A negative electrode comprises a sheet-like negative current collector having a negative electrode mixture layer formed on a surface thereof, and includes a double-side coating, portion in which the negative electrode mixture layer is formed on both sides of the negative current collector, and a single-side coating portion in which the negative electrode mixture layer is formed on one side of the negative current collector. At least a part of the single-side coating portion is disposed at the outermost periphery of the electrode assembly. At least a part of an exposed surface of the negative current collector in the single-side coating portion is in contact with the inner surface of an outer can. The charge expansion ratio of the negative electrode mixture layer in the single-side coating portion is greater than the charge expansion ratio of the negative electrode mixture layer in the double-side coating portion.

Find Patent Forward Citations

Sakitani, Nobuhiro. (2026). Non-aqueous electrolytic secondary battery (U.S. Patent No. 12770908). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12770908

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

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