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

Patent Owner(s)

Patent Owner	Address
QINGDAO DESHIPU METALLURGY SCIENCE & TECHNOLOGY CO LTD	CHENGYANG DISTRICT QINGDAO

International Classification(s)

• C22B:PRODUCTION OR REFINING OF METALS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Du, Hao	Qingdao, CN	36	690
Kim, Jaemu	Aichi, JP	1	0
Li, Jizong	Qingdao, CN	3	8

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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
February 09, 2010	US,7658782,B2   US7658782B2	GRANTED PATENT AS SECOND PUBLICATION
July 03, 2008	US,20080156146,A1   US20080156146A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7658782

Lime-based additive for steel smelting and the preparation method thereof

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