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Annette Ziegler
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Offenbach, DE
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last 30 patents
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Patent Grant
Process for leaching of precious metals
Patent number
5,336,474
Issue date
Aug 9, 1994
Degussa Aktiengesellschaft
Manfred Diehl
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Patent Grant
Process for leaching precious metals with hydrogen-peroxide and a c...
Patent number
5,250,272
Issue date
Oct 5, 1993
Degussa Aktiengesellschaft
Helmut Knorre
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...