US3062727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of niobium by fusion electrolysis
Assignee: Societe Generale Metallurgique de Hoboken SA
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Filing: 1959-12-04
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Granted: 1962-11-06
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Expires: 1979-12-04
Abstract
No abstract record available.
Inventors
- 👤 Pokorny Ernst Adalbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:48
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
METHOD FOR THE PREPARATION OF METALLIC NIOBIUM WHICH COMPRISES PASSING A DIRECT ELECTRIC CURRENT THROUGH A FUSED ELECTROLYTE BATH OF A DOUBLE FLUORIDE OF NIOBIUMIUM AND AN ALKALI METAL, SAID BATH CONTAINING A MEMBER SELECTED FROM THE GROUP CONSISTING OF A RARE EARTH METAL, A RARE EARTH METAL ALLOY, AND A RARE EARTH METAL HALIDE, AND RECOVERING AN ALLOY OF NIOBIUM AND RARE EARTH METAL.
Claim 2
Dependent Claim
65 words
METHOD FOR THE PREPARATION OF METALLIC NIOBIUM WHICH COMPRISES PASSING A DIRECT ELECTRIC CURRENT THROUGH A FUSED ELECTROLYTE BATH OF A DOUBLE FLUORIDE OF NIOBIUMIUM AND AN ALKALI METAL, SAID BATH CONTAINING A MEMBER SELECTED FROM THE GROUP CONSISTING OF A RARE EARTH METAL, A RARE EARTH METAL ALLOY, AND A RARE EARTH METAL HALIDE, AND RECOVERING AN ALLOY OF NIOBIUM AND RARE EARTH METAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |