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

Patent Owner(s)

Patent Owner	Address
ASTELLAS PHARMA INC	5-1 NIHONBASHI-HONCHO 2-CHOME CHUO-KU TOKYO 103-8411 JAPAN
WAKUNAGA PHARMACEUTICAL CO LTD	5-36 MIYAHARA 4-CHOME YODOGAWA-KU OSAKA-SHI OSAKA 532-0003

International Classification(s)

• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....
• C07D:HETEROCYCLIC COMPOUNDS
• A61P:THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDI....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Asano, Toru	Tokyo , JP	44	734
Kasahara, Chiyoshi	Tokyo , JP	17	231
Kinoshita, Tomohiko	Hiroshima , JP	2	12
Kontani, Toru	Tokyo , JP	12	58
Kubota, Hirokazu	Tokyo , JP	37	280
Misumi, Keiji	Hiroshima , JP	13	148
Mizuhara, Hidekazu	Tokyo , JP	1	12
Yamazaki, Hitoshi	Tokyo , JP	93	1222
Yokomoto, Masaharu	Hiroshima , JP	8	71

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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

Full Text

US Patent Application No: 2009/0042,856

PYRIDAZINONE DERIVATIVES USED FOR THE TREATMENT OF PAIN

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