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

Patent Owner(s)

Patent Owner	Address
JFE STEEL CORPORATION	2-3 UCHISAIWAI-CHO 2-CHOME CHIYODA-KU TOKYO 1000011 JAPAN

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
Hayashi, Kenji	Tokyo, JP	337	3096
Ichimiya, Katsuyuki	Tokyo, JP	25	44
Yuga, Masao	Tokyo, JP	56	140

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
7.5 Year Payment	$3600.00	$1800.00	$900.00	Apr 3, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Apr 3, 2029

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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
October 03, 2017	US,9777358,B2   US9777358B2	GRANTED PATENT AS SECOND PUBLICATION
July 23, 2015	US,20150203945,A1   US20150203945A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9777358

Thick-walled, high tensile strength steel with excellent CTOD characteristics of the weld heat-affected zone, and manufacturing method thereof

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