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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 PRODUCTS L P	201 TRESSER BOULEVARD ONE STAMFORD FORUM STAMFORD CT 06901
NAPP PHARMACEUTICAL GROUP LIMITED	CAMBRIDGE SCIENCE PARK MILTON ROAD CAMBRIDGE CB4 0AB

International Classification(s)

• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hahn, Udo	Nentershausen, DE	13	833
Leslie, Stewart Thomas	Cambridge, GB	21	2611
Malkowska, Sandra Therese Antoinette	Cambridgeshire, GB	16	2212
Miller, Ronald Brown	Basel, CH	18	2413
Prater, Derek Allan	Cambridge, GB	33	2806
Smith, Kevin John	Cambridge, GB	16	919
Wimmer, Walter	Limburg, DE	13	852
Winkler, Horst	Linter, DE	9	663

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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
July 11, 2006	US,7074430,B2   US7074430B2	GRANTED PATENT AS SECOND PUBLICATION
November 01, 2001	US,20010036477,A1   US20010036477A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7074430

Controlled release tramadol tramadol formulation

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