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.

Date of Patent:
Feb. 24, 2004

Filed:

Feb. 09, 2001
Applicant:
Inventors:

Makiko Kise, Tokyo, JP;

Syoji Yoshioka, Tokyo, JP;

Hironori Kuriki, Tokyo, JP;

Hiroaki Urushibata, Tokyo, JP;

Hisashi Shiota, Tokyo, JP;

Jun Aragane, Tokyo, JP;

Takashi Nishimura, Tokyo, JP;

Shigeru Aihara, Tokyo, JP;

Daigo Takemura, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/04 ; H01M 4/62 ;
U.S. Cl.
CPC ...
H01M 4/04 ; H01M 4/62 ;
Abstract

The battery of the present invention comprises the electrode which contains the pre-determined amount of electronically conductive material at which resistance increases in accordance with temperature rise and conductive agent; the electrode wherein the ratio of the total amount of the electronically conductive material and the conductive agent to the active material is set to a pre-determined value; and the electrode wherein the average particle size of the conductive agent based on the average particle size of the electronically conductive material is in a pre-determined range. The coducitive material contains an electrically conductive filler and a crystalline resin. The conductive material and the coductive agent are contacted with the active material. A significant reduction in short circuit current is achieved over a defined range of conductive agent particle size.


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