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

Patent Owner(s)

Patent Owner	Address
NITTAN VALVE CO LTD	518 SOYA HADANO-SHI KANAGAWA 257-0031

International Classification(s)

• F01L:CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINE....

• 2009 Application Filing Year
• F01L Class
• 329 Applications Filed
• 210 Patents Issued To-Date
• 63.83 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ishihara, Naoya	Hadano, JP	3	9
# of filed Patents : 3 Total Citations : 9
Kameda, Michihiro	Hadano, JP	24	62
# of filed Patents : 24 Total Citations : 62
Nagado, Masayasu	Hadano, JP	8	34
# of filed Patents : 8 Total Citations : 34

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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	Feb 13, 2025

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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
August 13, 2013	US,8505508,B2   US8505508B2	GRANTED PATENT AS SECOND PUBLICATION
March 29, 2012	US,20120073532,A1   US20120073532A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8505508

Phase varying device for engine

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