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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 8114543 B1

PDFFull Text
Expired
Date of Patent:
Feb. 14, 2012

Filed:

Dec. 11, 2006

Lithium ion secondary battery

Applicants:

Atsushi Sano, Tokyo, JP;

Tsuyoshi Iijima, Tokyo, JP;

Inventors:

Atsushi Sano, Tokyo, JP;

Tsuyoshi Iijima, Tokyo, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:

Oliff & Berridge, PLC

Primary Examiner:

Gregg Cantelmo

Assistant Examiner:

Eugenia Wang

Int. Cl.
CPC ...
H01M 4/13 (2010.01); H01M 6/48 (2006.01); H01M 10/18 (2006.01); H01M 4/58 (2010.01); H01M 4/64 (2006.01); H01M 4/72 (2006.01); H01M 2/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

A lithium ion secondary battery, having a positive electrode, a negative electrode, and a separator provided between the positive electrode and the negative electrode, the positive electrode and the negative electrode each having a collector and an active material layer provided over the collector, and the relationship Ts≧4Tc being satisfied, where Ts is the puncture strength of the separator, and Tc is the puncture strength of the collector of the positive electrode and/or the negative electrode.

Find Patent Forward Citations

Sano, Atsushi. (2012). Lithium ion secondary battery (U.S. Patent No. 8114543). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8114543

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

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