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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
SK INNOVATION CO LTD	SEOUL 03188
SK IE TECHNOLOGY CO LTD	26 JONG-RO JONGNO-GU SEOUL 03188

International Classification(s)

• D01D:MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Jo, Byoung Cheon	Daejeon, KR	14	59
Lee, Chol Ho	Daejeon, KR	10	32
Lee, Young Keun	Daejeon, KR	70	1333
Rhee, Jang Weon	Daejeon, KR	11	67
Sung, Jung Moon	Seoul, KR	14	69

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
November 15, 2011	US,8057718,B2   US8057718B2	GRANTED PATENT AS SECOND PUBLICATION
May 24, 2007	US,20070116944,A1   US20070116944A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8057718

Microporous polyethylene film having excellent physical properties, productivity, and quality consistency, and method of producing same

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