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

Patent Owner(s)

• NEC CORPORATION

International Classification(s)

• G06F:ELECTRIC DIGITAL DATA PROCESSING

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ito, Naoko	Tokyo, JP	59	2123
Ono, Yoshihiro	Tokyo, JP	75	945
Schüelke, Anett	Heidelberg, DE	1	2

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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
May 31, 2011	US,7953821,B2   US7953821B2	GRANTED PATENT AS SECOND PUBLICATION
November 24, 2005	US,20050262195,A1   US20050262195A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7953821

Presence information providing system, and method and server thereof

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