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Siemens and Halske AG
Siemens AG
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Siemens and Halske AG
Siemens AG
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Application filed by Siemens and Halske AG, Siemens AGfiledCriticalSiemens and Halske AG
Application grantedgrantedCritical
Publication of FR371207ApublicationCriticalpatent/FR371207A/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
C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
C—CHEMISTRY; METALLURGY
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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Organic Chemistry
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FR371207D1906-10-251906-10-25Procédé pour la fabrication de corps ou substances homogènes avec le tantale ou autres métaux difficilement fusibles
ExpiredFR371207A
(fr)