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.:
Date of Patent:
Oct. 15, 2013
Filed:
Aug. 31, 2009
Isao Matsumoto, Osaka, JP;
Hua Zhou, Osaka, JP;
Koji Kuwana, Osaka, JP;
M&G Eco-Battery Co., Ltd., Osaka-shi, JP;
Abstract
An electrode group E in which a positive electrodeand a negative electrodeare spirally-rolled interposing a separatoris contained in a bottomed cylindrical can. A metal exposure portionprovided on an end surface of the positive electrodeof the electrode group E or a metal-made current collecting plateelectrically connected to the metal exposure portion(called a current collecting portion of a positive electrode) and a cover bodyalso functioning as a positive electrode terminal are electrically connected by a metal lead plate. One or more electrolyte resistant metal pressersare arranged and electrically connected between the current collecting portion of the positive electrode and the cover body. The electrode group E is applied pressure by the cover bodyand the bottom portionof the bottomed cylindrical can