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

Patent Owner(s)

Patent Owner	Address
CENTRAL SOUTH UNIVERSITY	CHANGSHA

International Classification(s)

• B22F:WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES F....
• C22C:ALLOYS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
DUAN, Qinglong	Hunan, CN	8	45
GUO, Yang	Hunan, CN	122	1205
HUANG, Boyun	Hunan, CN	7	8
LIU, Zuming	Hunan, CN	13	6
MA, Mengmei	Hunan, CN	2	4
SU, Pengfei	Hunan, CN	7	10

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
7.5 Year Payment	$3600.00	$1800.00	$900.00	Feb 3, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Feb 3, 2029

Fee	Large entity fee	small entity fee	micro entity fee
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

Full Text

US Patent Application No: 2017/0216,919

METHOD FOR REMOVING PRIOR PARTICLE BOUNDARY AND HOLE DEFECT OF POWDER METALLURGY HIGH-TEMPERATURE ALLOY

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