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

Patent Owner(s)

Patent Owner	Address
POSCO CO LTD	POHANG-SI GYEONGSANGBUK-DO 37859

International Classification(s)

• C23C:COATING METALLIC MATERIAL; COATING MATERIAL WITH M....
• C21D:MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS....
• C22C:ALLOYS
• B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Kim, Myung-Soo	Gwangyang-si, KR	69	334
Lee, Suk-Kyu	Gwangyang-si, KR	13	9
Park, Il-Jeong	Gwangyang-si, KR	6	23

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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	Jun 20, 2026
7.5 Year Payment	$3600.00	$1800.00	$900.00	Jun 20, 2030
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Jun 20, 2034

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
December 20, 2022	US,11530470,B2   US11530470B2	GRANTED PATENT AS SECOND PUBLICATION
November 04, 2021	US,20210340650,A1   US20210340650A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 11530470

Highly corrosion-resistant plated steel sheet having excellent plating adhesion and resistance to liquid metal embrittlement

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