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. 13, 2011
Filed:
Jan. 23, 2007
Kenichi Ogawa, Fukushima, JP;
Hiroyuki Akashi, Kanagawa, JP;
Yosuke Konishi, Fukushima, JP;
Atsushi Kajita, Fukushima, JP;
Yoshiaki Obana, Fukushima, JP;
Tomitaro Hara, Fukushima, JP;
Kenichi Ogawa, Fukushima, JP;
Hiroyuki Akashi, Kanagawa, JP;
Yosuke Konishi, Fukushima, JP;
Atsushi Kajita, Fukushima, JP;
Yoshiaki Obana, Fukushima, JP;
Tomitaro Hara, Fukushima, JP;
Sony Corporation, Tokyo, JP;
Abstract
A battery in which a cathode and an anode are arranged so as to face each other an having a separator in between is provided. The separator is formed from a plurality of laminated microporous membranes and has a film thickness of 10x μm and a piercing strength of 150x gf or more, where 1≦x≦2. The air permeability of one layer among the plurality of microporous membranes is equal to or larger than 10% of the air permeability of the whole separator.