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

Patent Owner(s)

• PURDUE PHARMACEUTICAL PRODUCTS L.P.;NAPP PHARMACEUTICAL GROUP LIMITED

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	830
Leslie, Stewart Thomas	Cambridge, GB	21	2595
Malkowska, Sandra Therese Antoinette	Cambridgeshire, GB	16	2200
Miller, Ronald Brown	Basel, CH	18	2401
Prater, Derek Allan	Cambridge, GB	33	2791
Smith, Kevin John	Cambridge, GB	16	909
Wimmer, Walter	Limburg, DE	13	845
Winkler, Horst	Linter, DE	9	661

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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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