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

Patent Owner(s)

Patent Owner	Address
CSPC ZHONGQI PHARMACEUTICAL TECHNOLOGY (SHIJIAZHUANG) CO LTD	SHIJIAZHUANG HEBEI 050035
INSTITUTE OF MATERIA MEDICA CHINESE ACADEMY OF MEDICAL SCIENCES	BEIJING 100050

International Classification(s)

• C07D:HETEROCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Du, Guanhua	Beijing, CN	6	7
Gao, Mei	Beijing, CN	10	59
Qi, Yan	Beijing, CN	51	559
Tong, Yuanfeng	Beijing, CN	3	3
Wang, Yuehua	Beijing, CN	6	5
Wu, Song	Beijing, CN	107	1349
Yang, Qingyun	Beijing, CN	22	640
Yuan, Yue	Beijing, CN	19	45

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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
March 19, 2013	US,8399691,B2   US8399691B2	GRANTED PATENT AS SECOND PUBLICATION
October 14, 2010	US,20100261916,A1   US20100261916A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8399691

Method for resolution of a mixture of pinocembrin optical isomers, especially a pinocembrin racemate

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