Axel Hoppe

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Goslar, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for recovering niobium and/or tantalum compounds from such...
- Patent number 4,446,116
- Issue date May 1, 1984
- Hermann C. Starck Bertin
- Bruno Krismer
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...