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

Patent Owner(s)

• BAKER HUGHES INCORPORATED

International Classification(s)

• E21B:EARTH OR ROCK DRILLING

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Alsobrook, Charles W	Houston, TX	2	7
Jones, Thomas A	Cypress, TX	41	1651

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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
December 04, 2007	US,7303013,B2   US7303013B2	GRANTED PATENT AS SECOND PUBLICATION
March 15, 2007	US,20070056731,A1   US20070056731A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7303013

Method for reducing density of a system fluid and for performing drilling operations using a reduced density system fluid comprising aerogel

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