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

Patent Owner(s)

Patent Owner	Address
ENVENTURE GLOBAL TECHNOLOGY L L C	15995 NORTH BARKERS LANDING SUITE 350 HOUSTON TX 77079

International Classification(s)

• E21B:EARTH OR ROCK DRILLING

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Cook, Robert Lance	Katy , US	134	4674
Dean, William J	Katy, US	12	313
Ring, Lev	Houston , US	188	5787
Waddell, Kevin Karl	Houston, US	6	136

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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
April 14, 2009	US,7516790,B2   US7516790B2	GRANTED PATENT AS SECOND PUBLICATION
December 08, 2005	US,20050269107,A1   US20050269107A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7516790

Mono-diameter wellbore casing

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