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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 9472809 B1

PDFFull Text
Date of Patent:
Oct. 18, 2016

Filed:

Sep. 02, 2011

Lithium ion secondary battery

Applicants:

Ikuo Ozaki, Hitachinaka, JP;

Yoshimasa Koishikawa, Hitachinaka, JP;

Inventors:

Ikuo Ozaki, Hitachinaka, JP;

Yoshimasa Koishikawa, Hitachinaka, JP;

Assignee:

HITACHI AUTOMOTIVE SYSTEMS, LTD., Ibaraki, JP;

Attorney:

Volpe and Koenig, P.C.

Primary Examiner:

Basia Ridley

Assistant Examiner:

Caitlin Wilmot

Int. Cl.
CPC ...
H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/66 (2006.01); H01M 4/13 (2010.01); H01M 4/139 (2010.01); H01M 10/0525 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/131 (2010.01); H01M 4/1391 (2010.01); H01M 4/62 (2006.01);
U.S. Cl.
CPC ...
H01M 4/661 (2013.01); H01M 4/043 (2013.01); H01M 4/0404 (2013.01); H01M 4/0471 (2013.01); H01M 4/13 (2013.01); H01M 4/139 (2013.01); H01M 10/0525 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/625 (2013.01); H01M 2004/021 (2013.01); Y02E 60/122 (2013.01); Y02T 10/7011 (2013.01);
Abstract

Provided is a lithium ion secondary battery capable of realizing a high energy density while maintaining output. A lithium ion secondary battery Daccording to the present invention includes an electrode having an active material mix layeron both surfaces of a current collector. The active material mix layerhas a smaller void ratio in a current collector side regionof the active material mix layerand a surface side regionof the active material mix layerthan in an intermediate regionbetween the current collector side regionand the surface side regionof the active material mix layer

Find Patent Forward Citations

Ozaki, Ikuo. (2016). Lithium ion secondary battery (U.S. Patent No. 9472809). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9472809

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

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