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

Patent Owner(s)

Patent Owner	Address
EASTMAN CHEMICAL COMPANY	KINGSPORT TN

International Classification(s)

• C09K:MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED ....
• C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
• G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
• C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Donelson, Michael Eugene	Kingsport, US	102	825
Kuo, Thauming	Kingsport, US	111	1149
McWilliams, Douglas Stephens	Piney Flats, US	76	1728
Wang, Bin	Kingsport, US	1095	9516

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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	Nov 8, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Nov 8, 2029

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
May 08, 2018	US,9964667,B2   US9964667B2	GRANTED PATENT AS SECOND PUBLICATION
June 30, 2016	US,20160187539,A1   US20160187539A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9964667

Cellulose ester based quarter wave plates having normal wavelength dispersion

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