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

Patent Owner(s)

Patent Owner	Address
W R GRACE & CO - CONN	7500 GRACE DRIVE COLUMBIA MD 21044

International Classification(s)

• C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Coalter,, III Joseph N	Katy, US	11	50
Gao, Kuanqiang	Pearland, US	15	85
Leung, Tak W	Houston, US	37	325
Tao, Tao	Houston, US	193	1617

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Mar 19, 2025

Fee	Large entity fee	small entity fee	micro entity fee
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

Full Text

US Patent Application No: 2013/0245,306

TWO ATOM BRIDGED DICARBONATE COMPOUNDS AS INTERNAL DONORS IN CATALYSTS FOR POLYPROPYLENE MANUFACTURE

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