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:
Sep. 15, 2026
Filed:
Mar. 27, 2020
Tdk Corporation, Tokyo, JP;
Akinobu Nojima, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
An electrode body in which a battery sheet is wound around a first end thereof as an axis. The battery sheet includes: a current collector which includes a first layer and first and second metal layers; a first active material layer laminated on the first metal layer; a second active material layer laminated on the second metal layer; and a separator which comes into contact with the first or the second active material layer. The first and second metal layers are not laminated in at least a portion on the first and second surfaces of the first layer at the first end of the current collector, or the first or second metal layer is not laminated on a surface of either of the first surface or the second surface of the first layer which is on an outward side of a roll at a second end of the current collector.