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

Patent Owner(s)

Patent Owner	Address
NANJING AGRICULTURAL UNIVERSITY	210018 NO 1 WEIGANG XUANWU DISTRICT NANJING CITY JIANGSU PROVINCE NANJING CITY JIANGSU PROVINCE 210018

International Classification(s)

• 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
Chen, Shiguo	Nanjing, CN	35	17
Dai, Xinbin	Nanjing, CN	4	1
Dong, Yunfa	Nanjing, CN	4	1
Qiang, Sheng	Nanjing, CN	11	11
Yang, Chunlong	Nanjing, CN	12	67

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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	Jun 30, 2026

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
December 30, 2014	US,8921274,B2   US8921274B2	GRANTED PATENT AS SECOND PUBLICATION
July 05, 2012	US,20120172226,A1   US20120172226A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8921274

Method for eradicating weeds with derivatives of 3-acetyl-5-sec-butyl-4-hydroxy-3-pyrrolin-2-one

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