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

Patent Owner(s)

Patent Owner	Address
TOYO TANSO CO LTD	OSAKA-SHI OSAKA 555-0011
OHWADA CARBON INDUSTRIAL CO LTD	TOYONAKA-CITY OSAKA-FU

International Classification(s)

• C04B:LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREO....
• F27D:DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, ....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
HIRAOKA, Toshiharu	Osaka-shi, JP	14	65
KAJI, Masaru	Toyonaka-shi, JP	2	0
MACHINO, Hiroshi	Osaka-shi, JP	27	256
MURAKI, Yasunori	Toyonaka-shi, JP	1	0
OKASHITA, Hiromichi	Toyonaka-shi, JP	1	0
TADA, Takayuki	Toyonaka-shi, 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	Dec 27, 2027
7.5 Year Payment	$3600.00	$1800.00	$900.00	Dec 27, 2031
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Dec 27, 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: 2024/0210,114

HEAT RESISTANT STRUCTURE AND MEMBER FOR HEAT TREATMENT FURNACE

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