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

Patent Owner(s)

Patent Owner	Address
XIZANG HAISCO PHARMACEUTICAL CO LTD	XINGFU JIAYUAN ECONOMIC DEVELOPMENT ZONE JIEBA TOWN NAIDONG DISTRICT LHOKA TIBET 856099 856099

International Classification(s)

• C07D:HETEROCYCLIC COMPOUNDS
• C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Dou, Ying	Chengdu, CN	1	0
Fan, Jiang	Chengdu, CN	77	601
Feng, Jianchuan	Chengdu, CN	1	0
Liu, Sijia	Chengdu, CN	51	252
Liu, Zhenping	Chengdu, CN	2	15
Sun, Jingxiong	Chengdu, CN	1	0
Wang, Zhigang	Chengdu, CN	301	5223
Zhu, Fengfei	Chengdu, CN	1	0

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Oct 10, 2028
7.5 Year Payment	$3600.00	$1800.00	$900.00	Oct 10, 2032
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Oct 10, 2036

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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

Full Text

US Patent Application No: 2025/0115,559

PREPARATION METHOD OF PYRIDAZINONE DERIVATIVE, AND INTERMEDIATE THEREOF

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