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

Patent Owner(s)

Patent Owner	Address
LT MATERIALS CO LTD	113-19 DANGHA-RO NAMSA-MYEON CHEOIN-GU YONGIN-SI GYEONGGI-DO 17118

International Classification(s)

• H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
EUM, Sung-Jin	Yongin-city, KR	11	56
LEE, Joo-Dong	Seongnam-city, KR	26	123
LEE, Jun-A	Yongin-city, KR	2	2
PARK, Geon-Yu	Chuncheon-city, KR	25	48
YANG, Jeong-Hoon	Pyeongtaek-city, KR	1	2

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Jan 17, 2026

Fee	Large entity fee	small entity fee	micro entity fee
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

Full Text

US Patent Application No: 2014/0197,393

HYDROCARBON-BASED FUSED RING COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME

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