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

Patent Owner(s)

Patent Owner	Address
DALIAN UNIVERSITY OF TECHNOLOGY	NO 2 LINGGONG ROAD LIAONING DALIAN 116024
STUDIENGESELLSCHAFT KOHLE MBH	KAISER-WILHELM-PLATZ 1 MUELHEIM AN DER RUHR 45470

International Classification(s)

• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....
• H01F:MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF M....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Feyen, Mathias	Weinheim, DE	25	123
Li, Wen-Cui	Dalian City, CN	1	1
Lu, An-Hui	Dalian City, CN	2	6
Schueth, Ferdi	Mulheim, DE	6	28
Sun, Tao	Dalian City, CN	269	1665
Wang, Guang-Hui	Mulheim an der Ruhr, DE	1	1

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	May 14, 2025

Fee	Large entity fee	small entity fee	micro entity fee
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: 2013/0302,428

PROCESS FOR PREPARING CARBON PROTECTED SUPERPARAMAGNETIC OR MAGNETIC NANOSPHERES

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