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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 201 TRESSER BOULEVARD STAMFORD CT 06901

International Classification(s)

• C07D:HETEROCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Brown, Kevin	Philadelphia, US	175	2547
Doyle, Timothy J	Morristown, US	4	2
Whitehead, John W F	Newtown, US	8	67

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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
October 18, 2011	US,8039636,B2   US8039636B2	GRANTED PATENT AS SECOND PUBLICATION
September 24, 2009	US,20090240056,A1   US20090240056A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8039636

Methods for making 4-tetrazolyl-4-phenylpiperidine compounds

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