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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

International Classification(s)

• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....
• C07D:HETEROCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Chen, Jun	Changsha, CN	912	6715
Hu, Gaoyun	Changsha, CN	3	28
Tao, Lijian	Changsha, CN	3	28

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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
April 23, 2013	US,8426407,B2   US8426407B2	GRANTED PATENT AS SECOND PUBLICATION
June 07, 2012	US,20120142688,A1   US20120142688A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8426407

Preparation of 1-(substituted aryl)-5-trifluoromethyl-2-(1H)pyridone compounds and salts thereof and their applications

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