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Patents Grants
last 30 patents
Information
Patent Grant
Furnace hearth for improved molten iron production and method of op...
Patent number
6,749,664
Issue date
Jun 15, 2004
Midrex International, B.V., Rotterdam, Zurich Branch
Glenn E. Hoffman
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing beneficiated titanium oxides
Patent number
6,685,761
Issue date
Feb 3, 2004
Midrex International B.V. Rotterdam, Zurich Branch
Glenn E. Hoffman
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of direct iron-making / steel-making via gas or coal-based d...
Patent number
6,648,942
Issue date
Nov 18, 2003
Midrex International B.V. Rotterdam, Zurich Branch
Glenn E. Hoffman
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and apparatus for controlling temperature uniformity of the...
Patent number
6,602,317
Issue date
Aug 5, 2003
Midrex International, B.V. Rotterdam, Zurich Branch
Gary E. Metius
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing molten iron in duplex furnaces
Patent number
6,582,491
Issue date
Jun 24, 2003
Midrex International, B.V. Rotterdam, Zurich Branch
Glenn E. Hoffman
C21 - METALLURGY OF IRON
Information
Patent Grant
Iron production method of operation in a rotary hearth furnace and...
Patent number
6,413,295
Issue date
Jul 2, 2002
Midrex International B.V. Rotterdam, Zurich Branch
David C. Meissner
C21 - METALLURGY OF IRON
Information
Patent Grant
Treatment of iron oxide agglomerates before introduction into furnace
Patent number
6,214,087
Issue date
Apr 10, 2001
Midrex International B.V. Rotterdam, Zurich Branch
Glenn E. Hoffman
C21 - METALLURGY OF IRON
Information
Patent Grant
Direct reduced iron discharge system and method
Patent number
6,214,086
Issue date
Apr 10, 2001
Midrex International B.V. Rotterdam, Zurich Branch
Stephen Craig Montague
C21 - METALLURGY OF IRON
Information
Patent Grant
Direct reduced iron hot/cold discharge system
Patent number
6,200,363
Issue date
Mar 13, 2001
Midrex International B.V. Rotterdam Zurich Branch
Gilbert Y. Whitten
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus and method for introducing gas into a shaft furnace witho...
Patent number
6,146,442
Issue date
Nov 14, 2000
Midrex International B.V. Rotterdam, Zurich Branch
Daniel J. Sanford
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus for rapid reduction of iron oxide in a rotary hearth furnace
Patent number
5,885,521
Issue date
Mar 23, 1999
Midrex International BV Rotterdam, Zurich Branch
David C. Meissner
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for rapid reduction of iron oxide in a rotary hearth furnace
Patent number
5,730,775
Issue date
Mar 24, 1998
Midrex International BV Rotterdam, Zurich Branch
David C. Meissner
C21 - METALLURGY OF IRON
Information
Patent Grant
Spouted bed circulating fluidized bed direct reduction system and m...
Patent number
5,674,308
Issue date
Oct 7, 1997
Midrex International BV Rotterdam, Zurich Branch
David C. Meissner
C21 - METALLURGY OF IRON
Information
Patent Grant
Fluidizable bed co-processing fines in a direct reduction system
Patent number
5,647,887
Issue date
Jul 15, 1997
Midrex International BV Rotterdam, Zurich Branch
David C. Meissner
C21 - METALLURGY OF IRON
Information
Patent Grant
Shaft furnace for production of iron carbide
Patent number
5,618,032
Issue date
Apr 8, 1997
Midrex International BV Rotterdam, Zurich Branch
David C. Meissner
C21 - METALLURGY OF IRON
Information
Patent Grant
Circulating fluidized bed direct reduction system
Patent number
5,529,291
Issue date
Jun 25, 1996
Midrex International BV Rotterdam, Zurich Branch
David C. Meissner
C21 - METALLURGY OF IRON
Information
Patent Grant
Iron carbide production in shaft furnace
Patent number
5,437,708
Issue date
Aug 1, 1995
Midrex International BV Rotterdam, Zurich Branch
David C. Meissner
C21 - METALLURGY OF IRON
Information
Patent Grant
Circulating fluidizable bed co-processing of fines in a direct redu...
Patent number
5,435,831
Issue date
Jul 25, 1995
Midrex International BV Rotterdam, Zurich Branch
David C. Meissner
C21 - METALLURGY OF IRON
Information
Patent Grant
Circulating fluidized bed direct reduction system
Patent number
5,431,711
Issue date
Jul 11, 1995
Midrex International BV Rotterdam, Zurich Branch
David C. Meissner
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and apparatus for smelting iron oxide
Patent number
4,985,068
Issue date
Jan 15, 1991
Midrex International BV, Rotterdam, Zurich Branch
Glenn E. Hoffmann
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Apparatus and method for increasing carbon content of hot directly...
Patent number
4,752,329
Issue date
Jun 21, 1988
Midrex International BV Rotterdam, Zurich Branch
Michael N. Freeland
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of producing ferro-alloys
Patent number
4,731,112
Issue date
Mar 15, 1988
Midrex International, B.V. Rotterdam, Zurich Branch
Glenn E. Hoffman
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Iron bearing briquet and method of making
Patent number
4,728,358
Issue date
Mar 1, 1988
Midrex International, B.V. Rotterdam, Zurich Branch
Glenn E. Hoffman
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Method of increasing carbon content of direct reduced iron and appa...
Patent number
4,702,766
Issue date
Oct 27, 1987
Midrex International, B.V. Rotterdam, Zurich Branch
Paul M. Love
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of generating a reducing gas
Patent number
4,591,380
Issue date
May 27, 1986
Midrex International BV Rotterdam, Zurich Branch
Frank V. Summers
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus for generating a reducing gas
Patent number
4,553,742
Issue date
Nov 19, 1985
Midrex International BV Rotterdam, Zurich Branch
Frank V. Summers
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
76236160 - MIDREX SOLUTIONS
Serial number
76236160
Registration number
2558575
Filing date
Apr 5, 2001
MIDREX INTERNATIONAL, B.V. ROTTERDAM, ZURICH BRANCH
35 - Advertising
Information
Trademark
75814380 - OXY +
Serial number
75814380
Registration number
2445240
Filing date
Oct 4, 1999
MIDREX INTERNATIONAL, B.V. ROTTERDAM, ZURICH BRANCH
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
75795919 - MIDREX
Serial number
75795919
Registration number
2368743
Filing date
Sep 9, 1999
MIDREX INTERNATIONAL, B.V. ROTTERDAM, ZURICH BRANCH
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
75612863 - HOTLINK
Serial number
75612863
Registration number
2453717
Filing date
Dec 28, 1998
MIDREX INTERNATIONAL, B.V. ROTTERDAM, ZURICH BRANCH
6 - Common metals and their alloys
Information
Trademark
75392982 - MEGAMOD
Serial number
75392982
Registration number
2367412
Filing date
Nov 18, 1997
MIDREX INTERNATIONAL, B.V. ROTTERDAM, ZURICH BRANCH
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
75128997 - MEGAMOD
Serial number
75128997
Filing date
Jul 2, 1996
MIDREX INTERNATIONAL, B.V. ROTTERDAM, ZURICH BRANCH
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
75128998 - SUPER MEGAMOD
Serial number
75128998
Filing date
Jul 2, 1996
MIDREX INTERNATIONAL, B.V. ROTTERDAM, ZURICH BRANCH
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes