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. 25, 2013
Filed:
Mar. 26, 2008
Kazuo Katai, Tokyo, JP;
Yousuke Miyaki, Tokyo, JP;
Kiyonori Hinoki, Tokyo, JP;
Tadashi Suzuki, Tokyo, JP;
Kazuo Katai, Tokyo, JP;
Yousuke Miyaki, Tokyo, JP;
Kiyonori Hinoki, Tokyo, JP;
Tadashi Suzuki, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
An electrode has a current collector, and an active material-containing layer provided on the current collector and containing active material particles and ceramic particles, and a weight concentration of the ceramic particles to the active material particles in a surface part in the active material-containing layer on the opposite side to the current collector is higher than a weight concentration of the ceramic particles to the active material particles in a lower part in the active material-containing layer on the current collector side. Furthermore, the thickness of the surface part is not less than 30% nor more than 60% of the total thickness of the surface part and the lower part.