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

Patent Owner(s)

Patent Owner	Address
NGK SPARK PLUG CO LTD	NAGOYA PREFECTURE AICHI PREFECTURE JAPAN NAGOYA CITY AICHI

International Classification(s)

• H01T:SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Katsuraya, Kohei	Aichi, JP	17	55
Nakayama, Katsutoshi	Aichi, JP	43	409

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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
January 24, 2012	US,8102106,B2   US8102106B2	GRANTED PATENT AS SECOND PUBLICATION
August 11, 2011	US,20110193469,A1   US20110193469A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8102106

Spark plug and method of manufacturing the same

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