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

Patent Owner(s)

Patent Owner	Address
SHINAGAWA REFRACTORIES CO LTD	2-1 OTEMACHI 2-CHOME CHIYODA-KU TOKYO 100-0004

International Classification(s)

• C04B:LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREO....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Nakamura, Ryosuke	Tokyo, JP	116	701
Sasaki, Hisaharu	Tokyo, JP	4	16
Shikama, Hiroyuki	Tokyo, JP	1	12
Tomiya, Hisashi	Tokyo, JP	1	12

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
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
May 10, 2011	US,7939458,B2   US7939458B2	GRANTED PATENT AS SECOND PUBLICATION
November 19, 2009	US,20090286668,A1   US20090286668A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7939458

Refractory brick

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