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Friedrich Rosenstock
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Frankfurt, DE
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last 30 patents
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Patent Grant
Process for the recovery of silver by floatation from the residue f...
Patent number
5,482,535
Issue date
Jan 9, 1996
Metallgesellschaft Aktiengesellschaft
Ali-Nagi Beyzavi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Process for selective flotation of copper-lead-zinc sulfide
Patent number
5,439,115
Issue date
Aug 8, 1995
Metallgesellschaft Aktiengesellschaft
Ali-Naghi Beyzavi
B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information
Patent Grant
Process of treating contaminated soils
Patent number
5,223,147
Issue date
Jun 29, 1993
Metallgesellschaft Aktiengesellschaft
Friedrich Rosenstock
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Grant
Process for decontaminating contaminated soils
Patent number
5,094,012
Issue date
Mar 10, 1992
Metallgesellschaft AG
Friedrich Rosenstock
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Grant
Process of dressing contaminated soils
Patent number
4,969,775
Issue date
Nov 13, 1990
Metallgesellschaft AG
Fred Cappel
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Grant
Direct reduction process in a rotary kiln
Patent number
4,268,304
Issue date
May 19, 1981
Metallgesellschaft Aktiengesellschaft
Harry Serbent
C21 - METALLURGY OF IRON
Information
Patent Grant
Dewatering of mineral suspensions
Patent number
4,146,473
Issue date
Mar 27, 1979
Hoechst Aktiengesellschaft
Gerhard Edelmann
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL