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

Patent Owner(s)

Patent Owner	Address
TEIKOKU PISTON RING CO LTD	NISHIDA TAKASHI PILLS THE CAPITAL OF TOKYO JAPAN NO 6 NO 2 DINGMU

International Classification(s)

• F16J:PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; S....
• E02F:DREDGING; SOIL-SHIFTING

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ishida, Masao	Suwa, JP	23	171

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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
June 21, 2011	US,7963212,B2   US7963212B2	GRANTED PATENT AS SECOND PUBLICATION
January 22, 2009	US,20090020006,A1   US20090020006A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7963212

Combination of a piston and a piston ring

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