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

Patent Owner(s)

Patent Owner	Address
TSINGHUA UNIVERSITY	NO 1 QINGHUAYUAN HAIDIAN DISTRICT BEIJING 100084
BEIJING VISIONOX TECHNOLOGY CO LTD	100000 1ST FLOOR RAINBOW BUILDING NO 11 SHANGDI INFORMATION ROAD HAIDIAN DISTRICT BEIJING BEIJING CITY BEIJING CITY 100000

International Classification(s)

• H01J:ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Gao, Yudi	Beijing , CN	11	54
Liduo, Wang	Beijing , CN	1	1
Qiu, Yong	Beijing , CN	69	1052
Zhang, Deqiang	Beijing , CN	24	44

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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
March 10, 2009	US,7501755,B2   US7501755B2	GRANTED PATENT AS SECOND PUBLICATION
July 13, 2006	US,20060152145,A1   US20060152145A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7501755

Electron injection layer material for organic electroluminescence device

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