US2822240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for extracting vanadium values from ores, slags, concentrates and the like
Assignee: Vanadium Corp of America
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Filing: 1952-12-10
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Granted: 1958-02-04
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Expires: 1972-12-10
Abstract
No abstract record available.
Inventors
- 👤 Holbert E Dunn
- 👤 Mayer Bruno
- 👤 Ellis J O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:11
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/20; C22B34/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A PROCESS FOR EXTRACTING VANADIUM VALUES FROM VANADIUM-CONTAINING MATERIAL CONTAINING SUBSTANTIALLY WATER-INSOLUBLE COMPOUNDS OF VANADIUM OXIDE COMBINED WITH AT LEAST ONE BASIC OXIDE OF THE GROUP CONSISTING OF CAO, MGO, FEO AND MNO, THE STEPS COMPRISING MIXING THE COMMINUTED VANADIUM-CONTAINING MATERIAL WITH NACL AND AN ACTIVE PHOSPHORUS-BEARING COMPOUND OF THE GROUP CONSISTING OF MONOSODIUM ORTHOPHOSPHATE, SODIUM PYROPHOSPHATE, MONOCALCIUM PHOSPHATE, THE COMMERCIAL FROM OF MONOCALCIUM PHOSPHATE MONOHYDRATE CONTAINING 46-48% AVAILABLE P2O5, PHOSPHORUS PENTOXIDE AND PHOSPHORIC ACID, ROASTING SAID MIXTURE TO FORM WATERSOLUBLE SODIUM METAVANADATE AND WATER-INSOLUBLE COMPOUNDS OF SAID BASIC OXIDES, AND WATER-LEACHING THE ROAST TO EXTRACT SODIUM METAVANADATE.
Claim 2
Dependent Claim
99 words
IN A PROCESS FOR EXTRACTING VANADIUM VALUES FROM VANADIUM-CONTAINING MATERIAL CONTAINING SUBSTANTIALLY WATER-INSOLUBLE COMPOUNDS OF VANADIUM OXIDE COMBINED WITH AT LEAST ONE BASIC OXIDE OF THE GROUP CONSISTING OF CAO, MGO, FEO AND MNO, THE STEPS COMPRISING MIXING THE COMMINUTED VANADIUM-CONTAINING MATERIAL WITH NACL AND AN ACTIVE PHOSPHORUS-BEARING COMPOUND OF THE GROUP CONSISTING OF MONOSODIUM ORTHOPHOSPHATE, SODIUM PYROPHOSPHATE, MONOCALCIUM PHOSPHATE, THE COMMERCIAL FROM OF MONOCALCIUM PHOSPHATE MONOHYDRATE CONTAINING 46-48% AVAILABLE P2O5, PHOSPHORUS PENTOXIDE AND PHOSPHORIC ACID, ROASTING SAID MIXTURE TO FORM WATERSOLUBLE SODIUM METAVANADATE AND WATER-INSOLUBLE COMPOUNDS OF SAID BASIC OXIDES, AND WATER-LEACHING THE ROAST TO EXTRACT SODIUM METAVANADATE.
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |