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:
Jan. 14, 2003
Filed:
Nov. 27, 2000
Takayuki Endo, Utsunomiya, JP;
Hiroshi Watanuki, Utsunomiya, JP;
NEC Mobile Energy Corporation, Utsunomiya, JP;
Abstract
The present invention provides a nonaqueous electrolyte secondary battery, comprising a battery element produced by laminating and winding up a positive electrode and a negative electrode with a separator interposed therebetween. A separator is not provided on the outermost periphery of the battery element. A current collector surface of one of the positive electrode or the negative electrode is exposed to the ambient environment. A separation-preventive tape is attached on the battery element except a portion of one of the longer sides on the outermost periphery. This battery increases battery capacity of the thin-walled type nonaqueous electrolyte secondary battery.