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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 9455091 B1

PDFFull Text
Expired
Date of Patent:
Sep. 27, 2016

Filed:

Sep. 26, 2014

Electric storage device

Applicant:

Gs Yuasa International Ltd., Kyoto-shi, Kyoto, JP;

Inventors:

Akihiko Miyazaki, Kyoto, JP;

Sumio Mori, Kyoto, JP;

Tomonori Kako, Kyoto, JP;

Kenta Nakai, Kyoto, JP;

Assignee:

GS Yuasa International Ltd., Kyoto, JP;

Attorney:

Rankin, Hill & Clark LLP

Primary Examiner:

Dion R Ferguson

Int. Cl.
CPC ...
H01G 9/042 (2006.01); H01G 9/15 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01G 9/042 (2013.01); H01G 9/0425 (2013.01); H01G 9/15 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/667 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2220/20 (2013.01); Y02E 60/122 (2013.01); Y02T 10/7011 (2013.01);
Abstract

An electric storage device having a positive electrode, a negative electrode, a separator located between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode has a positive substrate layer, a positive composite layer containing a positive active material, and an undercoat layer located between the positive substrate layer and the positive composite layer. A density of the positive composite layer is 2.1 g/cmor more and 2.7 g/cmor less. The positive electrode has the rate of increase in sheet resistance after a solvent immersion test of 30% or less. The undercoat layer contains a binder selected from the group consisting of chitosan derivatives, cellulose derivatives and acrylic acid derivatives.

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Miyazaki, Akihiko. (2016). Electric storage device (U.S. Patent No. 9455091). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9455091

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