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:
Nov. 23, 2010
Filed:
Aug. 28, 2007
Masanori Sumihara, Osaka, JP;
Shuji Ito, Nara, JP;
Yasutaka Kogetsu, Osaka, JP;
Katsumi Kashiwagi, Nara, JP;
Nobuyuki Kirihara, Osaka, JP;
Masanori Sumihara, Osaka, JP;
Shuji Ito, Nara, JP;
Yasutaka Kogetsu, Osaka, JP;
Katsumi Kashiwagi, Nara, JP;
Nobuyuki Kirihara, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An electrode capable of effectively dispersing or relieving the stress generated in association with expansion and contraction of an active material is provided. The electrode is produced by forming an active material layer on a predetermined current collector. This current collector includes a base and a plurality of projections formed so as to extend outwardly from a surface of the base. The cross section of the projections in a thickness direction of the current collector has a tapered shape in which a width in a direction parallel to the surface of the base narrows from the surface of the base along an extending direction of the projections.