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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	6261 DONGHAEAN-RO NAM-GU GYEONGSANGBUK-DO POHANG-SI 37859

International Classification(s)

• C23C:COATING METALLIC MATERIAL; COATING MATERIAL WITH M....
• 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, Heung-Yun	Gwangyang-si, KR	14	71
Kim, Myung-Soo	Gwangyang-si, KR	69	334

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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	Aug 7, 2026
7.5 Year Payment	$3600.00	$1800.00	$900.00	Aug 7, 2030
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Aug 7, 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
February 07, 2023	US,11572607,B2   US11572607B2	GRANTED PATENT AS SECOND PUBLICATION
January 14, 2021	US,20210010106,A1   US20210010106A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 11572607

Zinc alloy-plated steel having excellent corrosion resistance and surface smoothness

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