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

Patent Owner(s)

Patent Owner	Address
COVIA SOLUTIONS INC	3 SUMMIT PARK DRIVE SUITE 700 INDEPENDENCE OH 44131

International Classification(s)

• C09K:MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED ....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Mahoney, Robert P	Newbury, US	93	1350
Portilla, Rosa Casado	Peabody, US	16	376
Soane, David	Chestnut Hill, US	27	565

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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	Jun 19, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Jun 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
December 19, 2017	US,9845427,B2   US9845427B2	GRANTED PATENT AS SECOND PUBLICATION
May 26, 2011	US,20110120719,A1   US20110120719A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9845427

Proppants for hydraulic fracturing technologies

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