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:
Apr. 23, 2002
Filed:
Mar. 16, 2001
Hisashi Shiota, Tokyo, JP;
Shigeru Aihara, Tokyo, JP;
Daigo Takemura, Tokyo, JP;
Jun Aragane, Tokyo, JP;
Hiroaki Urushibata, Tokyo, JP;
Kouji Hamano, Tokyo, JP;
Yasuhiro Yoshida, Tokyo, JP;
Takayuki Inuzuka, Tokyo, JP;
Michio Murai, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An object is to provide with good productivity a practical lithium ion secondary battery which secures lightness in weight and safety without using a firm battery case and has reduced internal resistivity. The lithium ion secondary battery comprises a tabular roll type laminated electrode body in which a band-formed positive electrode ( ) comprising a positive electrode active material layer ( ) and a positive electrode current collector ( ) alternates with a band-formed negative electrode ( ) comprising a negative electrode active material layer ( ) and a negative electrode current collector ( ), having therebetween a band-formed rolled separator ( ) which holds a lithium ion-containing electrolytic solution, the positive electrode ( ) or the negative electrode ( ) being adhered with two separators ( ) by an adhesive layer ( ).