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

Patent Owner(s)

Patent Owner	Address
TDK CORPORATION	2-5-1 NIHONBASHI CHUO-KU TOKYO 103-6128

International Classification(s)

• G11B:INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BET....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Kaizu, Akimasa	Tokyo, JP	29	141
Soeno, Yoshikazu	Tokyo, JP	54	684
Tomikawa, Satoshi	Tokyo, JP	16	387

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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
February 01, 2011	US,7880997,B2   US7880997B2	GRANTED PATENT AS SECOND PUBLICATION
September 17, 2009	US,20090231746,A1   US20090231746A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7880997

Magnetic recording apparatus and magnetic recording medium

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