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

Patent Owner(s)

Patent Owner	Address
IHI CORPORATION	TOKYO 135-8710

International Classification(s)

• F23J:REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COM....
• F23C:METHODS OR APPARATUS FOR COMBUSTION USING FLUENT F....
• F23D:BURNERS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
ECHIZENYA, Makoto	Tokyo, JP	1	0
ISHII, Hiroki	Tokyo, JP	60	347
KOZAKI, Takahiro	Tokyo, JP	8	22
OHNO, Emi	Tokyo, JP	3	1

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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	Mar 21, 2027
7.5 Year Payment	$3600.00	$1800.00	$900.00	Mar 21, 2031
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Mar 21, 2035

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

Full Text

US Patent Application No: 2023/0296,244

COMBUSTION DEVICE AND BOILER

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