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FANSTEEL PROD CO Inc
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FANSTEEL PROD CO Inc
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Application filed by FANSTEEL PROD CO IncfiledCriticalFANSTEEL PROD CO Inc
Application grantedgrantedCritical
Publication of FR693417ApublicationCriticalpatent/FR693417A/fr
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
C22B34/00—Obtaining refractory metals
C22B34/20—Obtaining niobium, tantalum or vanadium
C22B34/24—Obtaining niobium or tantalum
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Engineering & Computer Science
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FR693417D1930-04-051930-04-05Procédé pour l'élimination du carbone des métaux rares peu fusibles et plus particulièrement du tantale
ExpiredFR693417A
(fr)