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

Patent Owner(s)

Patent Owner	Address
SAMYANG CORPORATION	31 JONG-RO 33-GIL JONGNO-GU SEOUL 03129
RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY	2066 SEOBU-RO JANGAN-GU SUWON-SI GYEONGGI-DO

International Classification(s)

• C07D:HETEROCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
CHOI, Ji Eun	Seongnam-si, KR	28	47
KIM, Young Sug	Cheongju-si, KR	3	0
LEE, Chi Wan	Daejeon, KR	4	0
LEE, Deuk Rak	Daejeon, KR	3	0
LEE, Tae Woo	Suwon-si, KR	39	279
LEE, Won Jung	Daejeon, KR	7	8
OH, Chun Rim	Seoul, KR	4	0
YANG, Jung Woon	Anyang-si, KR	5	3

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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	Nov 26, 2025
7.5 Year Payment	$3600.00	$1800.00	$900.00	Nov 26, 2029
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Nov 26, 2033

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: 2022/0162,179

METHOD FOR THE SYNTHESIS OF 2,5-FURANDICARBOXYLIC ACID

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