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Ernst Wallis
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Eschborn, DE
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last 30 patents
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Patent Grant
Method of reprocessing zinc- and iron oxide-containing residual ma...
Patent number
5,667,556
Issue date
Sep 16, 1997
Metallgesellschaft Aktiengesellschaft
Andreas Orth
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Process of regenerating waste pickle which contains metal salts and...
Patent number
5,244,551
Issue date
Sep 14, 1993
Metallgesellschaft Aktiengesellschaft
Volker Brucken
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Structural part made of ferritic chromium-molybdenum steel which is...
Patent number
5,030,415
Issue date
Jul 9, 1991
Metallegesellschaft Aktiengesellschaft
Karl-Heinz Dorr
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Corrosion resistant hot and cold forming parts of Ni-Cr-Mo alloy an...
Patent number
4,906,437
Issue date
Mar 6, 1990
VDM Nickel-Technologie Aktiengesellschaft
Ulrich Heubner
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Corrosion-resisting Fe-Ni-Cr alloy
Patent number
4,876,065
Issue date
Oct 24, 1989
VDM Nickel-Technologie Aktiengesellschaft
Manfred Rockel
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...