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

Patent Owner(s)

Patent Owner	Address
PURDUE PHARMA L P	ONE STAMFORD FORUM STAMFORD CT 06901

International Classification(s)

• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....
• A21D:TREATMENT, e.g. PRESERVATION, OF FLOUR OR DOUGH FO....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Huang, Hua-Pin	Englewood Cliffs, US	64	4138
Masselink, John	Old Tappan, US	14	540
Oshlack, Benjamin	New York, US	246	21355
Tonelli, Alfred P	Congers, US	15	1606

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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
May 17, 2011	US,7943174,B2   US7943174B2	GRANTED PATENT AS SECOND PUBLICATION
December 30, 2004	US,20040266807,A1   US20040266807A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7943174

Controlled release hydrocodone formulations

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