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

Patent Owner(s)

• ASTELLAS PHARMA INC.

International Classification(s)

• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Azami, Hidenori	Tokyo, JP	15	184
Kaizawa, Hiroyuki	Tokyo, JP	23	1194
Kamijo, Kazunori	Tokyo, JP	9	274
Kubota, Hideki	Tokyo, JP	33	572
Nomura, Takaho	Tokyo, JP	3	60
Seo, Ryushi	Tokyo, JP	17	302
Sugita, Mari	Tokyo, JP	4	48
Tsuchiya, Kazuyuki	Tokyo, JP	16	144
Yamamoto, Hirofumi	Tokyo, JP	141	1520
Yamamoto, Satoshi	Tokyo, JP	514	8580

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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
January 22, 2013	US,8357688,B2   US8357688B2	GRANTED PATENT AS SECOND PUBLICATION
December 29, 2011	US,20110319385,A1   US20110319385A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8357688

Substituted imidazo[1,5-a]quinoxalin-4(5H)-ones as PDE9 inhibitors

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