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

Patent Owner(s)

Patent Owner	Address
ENERGY RECOVERY INC	1717 DOOLITTLE DRIVE SAN LEANDRO CA 94577

International Classification(s)

• F04F:PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUI....
• E21B:EARTH OR ROCK DRILLING

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• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ghasripoor, Farshad	Berkeley, US	80	1928
Gobburi, Baji	San Francisco, US	5	204
Krish, Prem	Foster City, US	21	668
Martin, Jeremy Grant	Oakland, US	34	1135

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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	Oct 17, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Oct 17, 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
April 17, 2018	US,9945216,B2   US9945216B2	GRANTED PATENT AS SECOND PUBLICATION
April 09, 2015	US,20150096739,A1   US20150096739A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9945216

Frac system with hydraulic energy transfer system

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