Porous separator for secondary batteries and secondary battery using same

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United States of America Patent

PATENT NO 10763480
APP PUB NO 20170018749A1
SERIAL NO

15124528

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Abstract

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A porous separator for secondary batteries is formed of a porous film, and has a first layered region having an average pore diameter of 100 nm or more and 500 nm or less, and a second layered region having a larger average pore diameter than the first layered region. The first layered region is positioned in one outermost surface of the porous film. Both the first layered region and the second layered region may be positioned as outermost surfaces of the porous film.

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Patent Owner(s)

Patent OwnerAddress
TOKYO OHKA KOGYO CO LTDKANAGAWA 211-0012

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sugawara, Tsukasa Kanagawa, JP 19 57

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