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:
Jun. 02, 2015
Filed:
Aug. 22, 2012
Hiroaki Hasegawa, Tokyo, JP;
Kiyonori Hinoki, Tokyo, JP;
Hiroaki Hasegawa, Tokyo, JP;
Kiyonori Hinoki, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
In an area where positive and negative electrode leadsoppose each other through a separatorin a wound electrochemical device, active material layers are removed from surfaces of current collectors, so as to form open areas. Even if the active material layers are formed on the surfaces of the current collectors, surfaces opposing them through the separator are provided with the leads protected by insulating tapes, whereby the areas serving as the open areas originally have no function as a capacitor. Therefore, by removing the active material layers from areas having no function as a capacitor, the wound electrochemical devicecan be made further thinner while inhibiting the capacity as a device from lowering.