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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)

• C21D:MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS....
• C22C:ALLOYS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ichiyama, Takahiro	Yamaguchi , JP	2	6
Ishitsuka, Tetsuo	Chiba , JP	10	56
Koyuba, Motofumi	Yamaguchi , JP	7	44
Mimura, Hiroyuki	Tokyo , JP	26	47
Takasugi, Naoki	Tokyo , JP	2	26

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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

Full Text

US Patent Application No: 2009/0250,146

High Strength Thick-Gauge Electric-Resistance Welded Steel Pipe Excellent in Hardenability, Hot Workability and Fatigue Strength and Method of Production of the Same

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