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Patents Grants
last 30 patents
Information
Patent Grant
Process for reduction of sulfur emission during sintering processes
Patent number
5,116,588
Issue date
May 26, 1992
Voest-Alpine Stahl Donawitz Gesellschaft m.b.H.
Horst Sulzbacher
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Procedure for producing coil-forming tubes in an inert enviroment
Patent number
5,060,496
Issue date
Oct 29, 1991
Voest-Alpine Stahl Donawitz Gesellschaft m.b.H.
Karl Reiter
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Convertor for continuously melting scrap with tapping means
Patent number
4,993,689
Issue date
Feb 19, 1991
Voest-Alpine Stahl Donawitz Gesellschaft m.b.H.
Ludwig von Bogdandy
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for continuously melting of steel
Patent number
4,957,547
Issue date
Sep 18, 1990
Voest-Alpine Stahl Donawitz Gesellschaft m.b.H.
Ludwig von Bogdandy
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for heating steel melts and an apparatus for carrying out t...
Patent number
4,950,325
Issue date
Aug 21, 1990
Voest-Alpine Stahl Donawitz Gesellschaft m.b.H.
Gerhard Mitter
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for heating steel melts as well as device for performing th...
Patent number
4,941,913
Issue date
Jul 17, 1990
Voest-Alpine Stahl Donawitz Gesellschaft m.b.H.
Luzian Pochmarski
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for utilizing of zinc-containing metallurgical dusts and sl...
Patent number
4,940,487
Issue date
Jul 10, 1990
Voest-Alpine Stahl Donawitz Gesellschaft m.b.H.
Walter Lugscheider
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Process for melting scrap iron, sponge iron and/or solid pig iron
Patent number
4,925,489
Issue date
May 15, 1990
Voest-Alpine Stahl Donawitz Gesellschaft m.b.H.
Ludwig von Bogdandy
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for continuously melting scrap
Patent number
4,895,594
Issue date
Jan 23, 1990
Voest-Alpine Stahl Donawitz Gesellschaft m.b.H.
Ludwig von Bogdandy
C21 - METALLURGY OF IRON