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

Patent Owner(s)

Patent Owner	Address
ASKA PHARMACEUTICAL CO LTD	TOKYO TOKYO METROPOLIS

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
Gotanda, Kotaro	Kawasaki, JP	10	78
Kawade, Kenji	Kawasaki, JP	3	42
Kobayashi, Hideo	Saitama, JP	434	4833
Nakano, Youichi	Hachioji, JP	19	133
Okada, Makoto	Inagi, JP	98	1232
Sato, Shuichiro	Komae, JP	12	78
Shinbo, Atsushi	Niiza, JP	9	102

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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	Mar 9, 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
September 09, 2014	US,8829000,B2   US8829000B2	GRANTED PATENT AS SECOND PUBLICATION
August 29, 2013	US,20130225572,A1   US20130225572A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8829000

Substituted imidazo[1,5-A]quinoxalines as phosphodiesterase 9 inhibitors

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