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

Patent Owner(s)

Patent Owner	Address
VITRO S A B DE C V	MONTERREY NUEVO LÉON 64410

International Classification(s)

• E04B:GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTIT....

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• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Calderon, Degollado Humberto	Nuevo León, MX	2	13
Elizondo-Valdez, Armando Raúl	Nuevo León, MX	1	11
Estrada-Zavala, Mario Roberto	Nuevo León, MX	1	11
Garcia-Rodriguez, Francisco Efraín	Nuevo León, MX	1	11
Rangel-Soto, Miguel Humberto	Nuevo León, MX	1	11

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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	Aug 4, 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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
February 04, 2014	US,8641940,B2   US8641940B2	GRANTED PATENT AS SECOND PUBLICATION
December 01, 2011	US,20110291310,A1   US20110291310A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8641940

Method for constructing a monolithic refractory concrete furnace for the manufacture of glass

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