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

Patent Owner(s)

Patent Owner	Address
QIAGEN NORTH AMERICAN HOLDINGS INC	19300 GERMANTOWN ROAD GERMANTOWN MD 20874

International Classification(s)

• C07H:SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTI....
• C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Heath, Ellen M	Minnetonka, US	17	325
Wages,, Jr John M	Tupelo, US	2	28

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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
February 22, 2011	US,7893228,B2   US7893228B2	GRANTED PATENT AS SECOND PUBLICATION
April 17, 2003	US,20030073830,A1   US20030073830A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7893228

Compositions and methods for using a solid support to purify RNA

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