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Patents Grants
last 30 patents
Information
Patent Grant
Arrangement for recovering molten pig iron or steel pre-products fr...
Patent number
4,955,587
Issue date
Sep 11, 1990
Korf Engineering GmbH
Horst Sulzbacher
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for producing pig iron
Patent number
4,913,733
Issue date
Apr 3, 1990
Korf Engineering GmbH (now Deutsche Voest-Alpine Industrieanlagenbau GmbH)
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Process of recovering molten pig iron or steel pre-products from lu...
Patent number
4,895,593
Issue date
Jan 23, 1990
Korf Engineering GmbH
Horst Sulzbacher
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus for cooling a hot product gas
Patent number
4,874,037
Issue date
Oct 17, 1989
Korf Engineering GmbH
Gero Papst
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Process for gaining electric energy in addition to producing molten...
Patent number
4,861,369
Issue date
Aug 29, 1989
Korf Engineering GmbH
Ludwig von Bogdandy
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for producing pig iron using coal degassing reactor to form...
Patent number
4,857,105
Issue date
Aug 15, 1989
Korf Engineering GmbH
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for removing sulphur from the waste gas of a reduction shaf...
Patent number
4,857,284
Issue date
Aug 15, 1989
Korf Engineering GmbH
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for producing carburized sponge iron
Patent number
4,854,967
Issue date
Aug 8, 1989
Korf Engineering GmbH
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus for cooling and cleaning producer gas and top gas
Patent number
4,850,574
Issue date
Jul 25, 1989
Korf Engineering GmbH
Bogdan Vuletic
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for the production of pig iron using cyclone
Patent number
4,851,039
Issue date
Jul 25, 1989
Korf Engineering GmbH
Gero Papst
C21 - METALLURGY OF IRON
Information
Patent Grant
Melting gasifier
Patent number
4,846,449
Issue date
Jul 11, 1989
Korf Engineering GmbH
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Fluidized bed arrangement for the production of molten pig iron and...
Patent number
4,805,880
Issue date
Feb 21, 1989
Voest-Alpine Akt.
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for the production of pig iron from fine ore using plasma b...
Patent number
4,806,154
Issue date
Feb 21, 1989
Korf Engineering GmbH
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for compacting iron particles and subsequent breaking apart...
Patent number
4,804,319
Issue date
Feb 14, 1989
Korf Engineering GmbH
Klaus Langner
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for cooling and cleaning producer gas and top gas
Patent number
4,793,857
Issue date
Dec 27, 1988
Korf Engineering GmbH
Bogdan Vuletic
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus for the direct reduction of sulphurous iron ores
Patent number
4,790,517
Issue date
Dec 13, 1988
Korf Engineering GmbH
Waldemar Mathews
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for producing sponge iron particles and molten pig iron
Patent number
4,784,689
Issue date
Nov 15, 1988
Korf Engineering GmbH
Bogdan Vuletic
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for compacting iron particles and subsequent breaking apart...
Patent number
4,769,211
Issue date
Sep 6, 1988
Korf Engineering GmbH
Klaus Langner
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for producing molten pig iron or steel raw material
Patent number
4,755,219
Issue date
Jul 5, 1988
Korf Engineering GmbH
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for the direct reduction of sulphurous iron ores
Patent number
4,735,653
Issue date
Apr 5, 1988
Korf Engineering GmbH
Waldemar Mathews
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for the production of molten pig iron and steel pre-products
Patent number
4,728,360
Issue date
Mar 1, 1988
Voest-Alpine Akt.
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for producing molten pig iron or steel pre-products
Patent number
4,725,308
Issue date
Feb 16, 1988
Voest-Alpine Atkiengesellschaft
Werner Kepplinger
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of producing molten pig iron or steel pre-products from part...
Patent number
4,708,736
Issue date
Nov 24, 1987
Voest-Alpine Akt.
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Process and a plant for the direct reduction of iron oxide particle...
Patent number
4,699,655
Issue date
Oct 13, 1987
Voest-Alpine Akt.
Konstantin Milionis
C21 - METALLURGY OF IRON
Information
Patent Grant
Device for continuous casting
Patent number
4,693,295
Issue date
Sep 15, 1987
Korf Engineering GmbH
Siegfried Henders
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for the production of pig iron
Patent number
4,673,432
Issue date
Jun 16, 1987
Korf Engineering GmbH
Rolf Hauk
C21 - METALLURGY OF IRON
Information
Patent Grant
Arrangement comprising a gasifier and a direct reduction furnace
Patent number
4,605,205
Issue date
Aug 12, 1986
Korf Engineering GmbH
Klaus Langner
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing molten pig iron or steel pre-products in a mel...
Patent number
4,588,437
Issue date
May 13, 1986
Korf Engineering GmbH
Werner Kepplinger
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus for directly making liquid pig-iron from coarse iron ore
Patent number
4,448,402
Issue date
May 15, 1984
Korf Engineering GmbH
Ralph Weber
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for the direct reduction of metallic oxides
Patent number
4,135,914
Issue date
Jan 23, 1979
Korf Engineering GmbH
Bogdan Vuletic
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73565601 - KOREX
Serial number
73565601
Filing date
Oct 28, 1985
KORF ENGINEERING GMBH
7 - Machines and machine tools
Information
Trademark
73558731 - COREX
Serial number
73558731
Registration number
1412029
Filing date
Sep 17, 1985
KORF ENGINEERING GMBH
7 - Machines and machine tools