US2947672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the extraction of relatively pure vanadium, niobium and tantalum
Assignee: Saint Gobain Abrasives Inc
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Filing: 1959-08-04
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Granted: 1960-08-02
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Expires: 1979-08-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Guy Ervin
- 👤 Herbert F G Ueltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:55
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/26; C25C3/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
PROCESS FOR THE PREPARATION OF METAL SELECTED FROM THE FIFTH GROUP CONSISTING OF VANADIU, NIOBIUM AND TANTALUM AND MIXTURES THEREOF WHICH COMPRISES PASSING A DIRECT ELECTRIC CURRENT THROUGH A CELL HAVING A SOLID ANODE AND A SOLID CATHODE INA DIRECT CURRENT ELECTRIC CIRCUIT, THE ELECTROLYTE IN SAID CELL CONSISTING, APART FROM ANY FIFTY GROUP METAL HALIDE CONTENT, ESSENTIALLY OF FUSED HALIDE OF METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS INCLUDING MANGESIUM AND MIXTURES OF SUCH HALIDES, SAID CELL CONTAINING FIFTH GROUP METAL CARBIDE IN SAID HALIDE ELECTRICALLY CONNECTED TO THE POSITIVE SIDE OF THE ELECTRIC CIRCUIT AND COLLECTING TO THE GROUP METAL ELECTROLYTICALLY LIBERATED AT THE CELL CATHODE.
Claim 2
Dependent Claim
114 words
PROCESS FOR THE PREPARATION OF METAL SELECTED FROM THE FIFTH GROUP CONSISTING OF VANADIU, NIOBIUM AND TANTALUM AND MIXTURES THEREOF WHICH COMPRISES PASSING A DIRECT ELECTRIC CURRENT THROUGH A CELL HAVING A SOLID ANODE AND A SOLID CATHODE INA DIRECT CURRENT ELECTRIC CIRCUIT, THE ELECTROLYTE IN SAID CELL CONSISTING, APART FROM ANY FIFTY GROUP METAL HALIDE CONTENT, ESSENTIALLY OF FUSED HALIDE OF METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS INCLUDING MANGESIUM AND MIXTURES OF SUCH HALIDES, SAID CELL CONTAINING FIFTH GROUP METAL CARBIDE IN SAID HALIDE ELECTRICALLY CONNECTED TO THE POSITIVE SIDE OF THE ELECTRIC CIRCUIT AND COLLECTING TO THE GROUP METAL ELECTROLYTICALLY LIBERATED AT THE CELL CATHODE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |