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

Patent Owner(s)

Patent Owner	Address
TAIWAN TEXTILE RESEARCH INSTITUTE	NEW TAIPEI CITY

International Classification(s)

• C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
• B01D:SEPARATION
• C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Chen, Chun-Hung	New Taipei, TW	246	1469
Chou, Shang-Chih	New Taipei, TW	16	3
Hu, Chien-Chieh	New Taipei, TW	12	9

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
7.5 Year Payment	$3600.00	$1800.00	$900.00	Oct 21, 2027
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Oct 21, 2031

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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
April 21, 2020	US,10625216,B2   US10625216B2	GRANTED PATENT AS SECOND PUBLICATION
February 01, 2018	US,20180028984,A1   US20180028984A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 2018/0028,984

POLYIMIDE MIXTURE AND GAS SEPARATION MEMBRANE

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