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:
Dec. 12, 2006
Filed:
Jul. 13, 2004
Akio Enomoto, Chita-gun, JP;
Kenji Kawamura, Nagoya, JP;
Kenshin Kitoh, Nagoya, JP;
Toshihiro Yoshida, Nagoya, JP;
Akio Enomoto, Chita-gun, JP;
Kenji Kawamura, Nagoya, JP;
Kenshin Kitoh, Nagoya, JP;
Toshihiro Yoshida, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A lithium secondary battery comprises an internal electrode body formed by winding a positive electrode and a negative electrode on an outer peripheral wall of a hollow winding core, nonaqueous electrolyte solution contained in the case, a cylindrical battery case containing this internal electrode body inside, at least one electrode cap sealing the internal electrode body, and at least one pressure release hole in a position corresponding with the center axis of the winding core.