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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

International Classification(s)

• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....
• A01N:PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLA....
• C07D:HETEROCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Feng, Yipu	Beijing, CN	3	5
Peng, Ying	Beijing, CN	81	559
Sun, Jingguo	Shijiazhuang, CN	1	1
Wang, Rongduan	Shijiazhuang, CN	2	2
Wang, Xiaoliang	Beijing, CN	79	338
Yang, Jinghua	Beijing, CN	14	21
Yang, Liying	Shijiazhuang, CN	6	43
Yang, Zhankun	Shijiazhuang, CN	2	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	Apr 8, 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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
October 08, 2013	US,8552058,B2   US8552058B2	GRANTED PATENT AS SECOND PUBLICATION
November 15, 2007	US,20070265336,A1   US20070265336A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8552058

Application of L-n-butylphthalide in preventing and treating dementia

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