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

Patent Owner(s)

Patent Owner	Address
DAINIPPON SUMITOMO PHARMA CO LTD	JAPAN OSAKA CITY PLAZA OSAKA BUILT TOWN 2 CHOME 6 NO 8

International Classification(s)

• C07D:HETEROCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Tanaka, Daisuke	Osaka, JP	276	1679

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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 05, 2013	US,8389742,B2   US8389742B2	GRANTED PATENT AS SECOND PUBLICATION
August 18, 2011	US,20110201807,A1   US20110201807A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8389742

3-hydrazino-2,5-dioxopyrrolidine-3-carboxylate, process for production of the same, and use of the same

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