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

Patent Owner(s)

Patent Owner	Address
HERITAGE RESEARCH GROUP	5400 WEST 86TH ST INDIANAPOLIS IN 46268

International Classification(s)

• C21B:MANUFACTURE OF IRON OR STEEL

• 2005 Application Filing Year
• C21B Class
• 68 Applications Filed
• 37 Patents Issued To-Date
• 54.42 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Bratina, James E	Greenwood, US	14	55
# of filed Patents : 14 Total Citations : 55
Lenti, Kim M	South Holland, US	1	5
# of filed Patents : 1 Total Citations : 5

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Patent Citation Ranking

• 1 Citation Count
• C21B Class

• 20 % this patent is cited more than
• 16 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
April 07, 2009	US,7513929,B2   US7513929B2	GRANTED PATENT AS SECOND PUBLICATION
March 22, 2007	US,20070062330,A1   US20070062330A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7513929

Operation of iron oxide recovery furnace for energy savings, volatile metal removal and slag control

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Abstract

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A method of operating a channel induction furnace so as to receive electric arc furnace (EAF) dust, basic oxygen furnace (BOF) sludge/dust and/or other iron and volatile metals containing materials as a feed stream on a batch, continuous or semi-continuous basis together with a iron-containing material feed, and therefrom produce an iron-containing hot metal or pig iron product while recovering iron value from the feed materials and recovering volatile metal components contained in the feed materials.

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Description

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Claims

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Legal Events

 

• STCH2017
• FP2017
• LAPS2017
• REMI2016
• AS2014
• FPAY2012
• I2009
• AS2007
• P2007
• F2005
• PD2005

Date	Code	Event	Description
May 08, 2017	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Apr 07, 2017	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Apr 07, 2017
Apr 07, 2017	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Nov 18, 2016	REMI	MAINTENANCE FEE REMINDER MAILED
Dec 29, 2014	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HERITAGE ENVIRONMENTAL SERVICES LLC;REEL/FRAME:034801/0577 Owner name: HERITAGE RESEARCH GROUP, INDIANA Effective Date: Dec 29, 2014
Jul 02, 2012	FPAY	FEE PAYMENT	year of fee payment: 4
Apr 07, 2009	I	Issuance
Sep 27, 2007	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BRATINA, JAMES E.;LENTI, KIM M.;REEL/FRAME:019912/0739 Owner name: HERITAGE ENVIRONMENTAL SERVICES, LLC, INDIANA Effective Date: Sep 27, 2007
Mar 22, 2007	P	Published
Apr 01, 2005	F	Filing
Apr 01, 2005	PD	Priority Date