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

Patent Owner(s)

• HITACHI-GE NUCLEAR ENERGY LTD.

International Classification(s)

• G21C:NUCLEAR REACTORS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Misawa, Naoto	Ibaraki, JP	1	0
Okazawa, Hiroshi	Ibaraki, JP	4	3
Ooka, Kento	Ibaraki, JP	1	0

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Sep 23, 2024
7.5 Year Payment	$3600.00	$1800.00	$900.00	Sep 23, 2028
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Sep 23, 2032

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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
March 23, 2021	US,10957458,B2   US10957458B2	GRANTED PATENT AS SECOND PUBLICATION
December 13, 2018	US,20180358133,A1   US20180358133A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 10957458

Movable standby hydraulic control unit that is usable during a control rod drive system inspection to temporarily replace any one of several hydraulic control units

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