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

Patent Owner(s)

Patent Owner	Address
EDW C LEVY CO	DETROIT MI 48209

International Classification(s)

• C21C:PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE....

• 2011 Application Filing Year
• C21C Class
• 63 Applications Filed
• 51 Patents Issued To-Date
• 80.96 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Dunn, Thomas M	Hilltop Lakes, US	13	207
# of filed Patents : 13 Total Citations : 207

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Patent Citation Ranking

• 2 Citation Count
• C21C Class

• 23.81 % this patent is cited more than
• 13 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
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
July 10, 2012	US,8216954,B2   US8216954B2	GRANTED PATENT AS SECOND PUBLICATION
February 23, 2012	US,20120046155,A1   US20120046155A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8216954

Taphole fill material and method for manufacturing the same

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Abstract

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A high-temperature, heat-resistant fill material is disclosed. The high-temperature, heat-resistant fill material includes an alumina refractory waste material having one or more of a used alumina-magnesium-carbon material, a used high-alumina material and a used fused-grain alumina material is disclosed. A method for method for manufacturing a material is also disclosed.

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Description

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Claims

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Legal Events

 

• MAFP2023
• MAFP2019
• FPAY2015
• I2012
• STCF2012
• P2012
• F2011
• PD2009

Date	Code	Event	Description
Dec 27, 2023	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 12
Dec 30, 2019	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8
Dec 23, 2015	FPAY	FEE PAYMENT	year of fee payment: 4
Jul 10, 2012	I	Issuance
Jun 20, 2012	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Feb 23, 2012	P	Published
Nov 03, 2011	F	Filing
Apr 10, 2009	PD	Priority Date