Polypropylene microporous membrane for battery separator

United States of America Patent

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Apr 9, 2002
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Nov 8, 2001
app pub date
Jun 26, 1998
filing date
Jun 26, 1998

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Abstract

A battery separator is a polypropylene microporous membrane, made from a beta-nucleated precursor, and having an electrical resistance of less than 30 ohms-inches per mil, and a puncture strength of greater than 400 grams-force per mil. mil.

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CELGARD, LLC

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Inventor Name	Address	# of filed Patents	Total Citations
Fisher, Harold M	Charlotte, NC	3	72
Wensley, C Glen	Rock Hill, SC	36	608

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Polypropylene microporous membrane for battery separator

Number of patents in Portfolio can not be more than 2000

United States of America Patent

09105516

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PATENT NO	6368742
APP PUB NO	20010038942A1
SERIAL NO	09105516
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
April 09, 2002	US,6368742,B2 US6368742B2	GRANTED PATENT AS SECOND PUBLICATION
November 08, 2001	US,20010038942,A1 US20010038942A1	FIRST PUBLISHED PATENT APPLICATION

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09105516

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