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

Patent Owner(s)

• KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.);KOBE STEEL, LTD.

International Classification(s)

• B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Yamamoto, Kenji	Kobe , JP	731	7290

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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
April 21, 2009	US,7521131,B2   US7521131B2	GRANTED PATENT AS SECOND PUBLICATION
March 30, 2006	US,20060068225,A1   US20060068225A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7521131

Hard coating excellent in wear resistance and in oxidation resistance and target for forming the same

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