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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	YUELU DISTRICT CITY HUNAN PROVINCE 410083 CHANGSHA LUSHAN ROAD NO 932 CHANGSHA CITY HUNAN PROVINCE 410083
HUNAN BOYUN AUTOMOBILE BRAKE MATERIALS CO LTD	NO 500 LUSONG ROAD CHANGSHA HI TECH DEVELOPMENT ZONE 410000 HUNAN CHANGSHA CITY HUNAN PROVINCE 410000

International Classification(s)

• F16D:COUPLINGS FOR TRANSMITTING ROTATION

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Huang, Boyun	Changsha, CN	7	8
Liu, Bowei	Changsha, CN	5	12
Liu, Meiling	Changsha, CN	5	5
Liu, Yong	Changsha, CN	1235	24302

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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	Apr 30, 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: 2013/0289,161

Automotive Ceramic Friction Material Free from Asbestos and Metal and Preparation Method Thereof

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