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

Patent Owner(s)

• KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.);KOBE STEEL, LTD.

International Classification(s)

• C21C:PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE....
• C22C:ALLOYS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Sakamoto, Koichi	Kobe, JP	150	1638
Sugimura, Tomoko	Kobe, JP	24	49

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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	Dec 23, 2026

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
June 23, 2015	US,9062361,B2   US9062361B2	GRANTED PATENT AS SECOND PUBLICATION
April 22, 2010	US,20100098577,A1   US20100098577A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9062361

Si-killed steel wire rod and spring excellent in fatigue properties

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