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

Patent Owner(s)

Patent Owner	Address
NIPPON STEEL CORPORATION	CHIYODA-KU TOKYO 100-8071

International Classification(s)

• F16L:PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR ....
• B23K:SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLA....
• B21C:MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PR....
• C21D:MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS....
• C22C:ALLOYS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Asahi, Hitoshi	Tokyo, JP	44	533
Sawamura, Mitsuru	Tokyo, JP	13	54

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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	Mar 8, 2027

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
September 08, 2015	US,9126283,B2   US9126283B2	GRANTED PATENT AS SECOND PUBLICATION
April 18, 2013	US,20130092280,A1   US20130092280A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9126283

Electric resistance welded oil country tubular goods and manufacturing method of electric resistance welded oil country tubular goods

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