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

Patent Owner(s)

Patent Owner	Address
SONY CORPORATION	1-7-1 KONAN MINATO-KU TOKYO 1080075 ?1080075

International Classification(s)

• H04W:WIRELESS COMMUNICATION NETWORKS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Okuda, Shizue	Kanagawa, JP	7	380

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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
April 05, 2011	US,7920871,B2   US7920871B2	GRANTED PATENT AS SECOND PUBLICATION
April 24, 2003	US,20030078054,A1   US20030078054A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7920871

Telephone device

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