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

Patent Owner(s)

Patent Owner	Address
DUPONT ELECTRONIC MATERIALS INTERNATIONAL LLC	455 FOREST STREET MARLBOROUGH MA 01752

International Classification(s)

• C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS
• G03F:PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNE....
• C07J:STEROIDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Aqad, Emad	Northborough, US	70	229
Li, Mingqi	Shrewsbury, US	105	434
Mattia, Joseph	Framingham, US	8	32
Xu, Cheng-Bai	Southborough, US	81	642

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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	Dec 6, 2024
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Dec 6, 2028

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
June 06, 2017	US,9671689,B2   US9671689B2	GRANTED PATENT AS SECOND PUBLICATION
October 13, 2011	US,20110250537,A1   US20110250537A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9671689

Cholate photoacid generators and photoresists comprising same

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