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. 23, 2015
Filed:
Aug. 27, 2012
Atsushi Kajita, Fukushima, JP;
Yukako Fujimoto, Fukushima, JP;
Kazuhito Hatta, Fukushima, JP;
Manabu Aoki, Fukushima, JP;
Masatake Hayashi, Fukushima, JP;
Atsushi Kajita, Fukushima, JP;
Yukako Fujimoto, Fukushima, JP;
Kazuhito Hatta, Fukushima, JP;
Manabu Aoki, Fukushima, JP;
Masatake Hayashi, Fukushima, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
A separator is provided. The separator includes a base layer and a surface layer, wherein the surface layer is on at least one side of the base layer, and wherein the surface layer is structured so as to collapse at time of charging to prevent damage to a negative electrode due to expansion thereof. A battery including the separator is also provided. An electric device, an electric vehicle, and an electrical storage device including the battery are further provided.