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

Patent Owner(s)

Patent Owner	Address
NOV CANADA ULC	4300 BANKERS HALL WEST 888 - 3RD STREET S W CALGARY ALBERTA T2P 5C5

International Classification(s)

• E21B:EARTH OR ROCK DRILLING

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Majko, Sean	Calgary, CA	4	65
Pugh, Robert	Okotoks, CA	6	88
Scherschel, Steve	Calgary, CA	2	64
Sherman, Scott	Blackie, CA	62	1488

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
7.5 Year Payment	$3600.00	$1800.00	$900.00	Mar 19, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Mar 19, 2029

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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
September 19, 2017	US,9765594,B2   US9765594B2	GRANTED PATENT AS SECOND PUBLICATION
February 19, 2015	US,20150047828,A1   US20150047828A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9765594

Apparatus and method for stimulating subterranean formations

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