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

Patent Owner(s)

Patent Owner	Address
APOTEX PHARMACHEM INC	34 SPALDING DRIVE BRANTFORD N3T6B8

International Classification(s)

• C07D:HETEROCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Datta, Probal Kanti	Hamilton, CA	9	14
Johansen, Michael B	Guelph, CA	5	3
Stewart, Craig	Mississauga, CA	32	790
Zhao, Yajun	Brantford, CA	213	2100

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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 16, 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 16, 2014	US,8835638,B2   US8835638B2	GRANTED PATENT AS SECOND PUBLICATION
October 17, 2013	US,20130274474,A1   US20130274474A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8835638

1,3-Oxathiolane derivatives, process for the preparation of 1,3-Oxathiolane derivatives and intermediates thereof

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