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

Patent Owner(s)

Patent Owner	Address
TOHOKU UNIVERSITY	2-1-1 KATAHIRA AOBA-KU SENDAI-SHI MIYAGI 980-8577
I2C CO LTD	5-16 NONAKA 4-CHOME UBE-SHI YAMAGUCHI 7550025

International Classification(s)

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

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
ITAMURA, Masayuki	Yamaguchi, JP	15	65
ITOFUJI, Haruki	Yamaguchi, JP	6	0

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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	Sep 5, 2027
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Sep 5, 2031

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

Full Text

US Patent Application No: 2020/0071,780

METHOD FOR PRODUCING DIE-CAST PRODUCT OF SPHERICAL GRAPHITIC CAST IRON INCLUDING ULTRAFINE SPHERICAL GRAPHITE, AND SPHEROIDIZING TREATMENT AGENT

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