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Liquid-liquid extraction recovery of vanadium and molybdenum values using a quaternary ammonium extractant
Assignee: General Mills Inc
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Filing: 1959-11-18
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Granted: 1963-03-26
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Expires: 1979-11-18
Abstract
No abstract record available.
Inventors
- 👤 Clifford J Lewis
- 👤 James L Drobnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:07
CPC Classifications
C; C01; C01G; C01G39/00; C01G39/003; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/28; C22B3/288; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A PROCESS OF RECOVERING METALS SELECTED FROM THE GROUP CONSISTING OF VANADIUM AND MOLYBDENUM FROM AN AQUEOUS SOLUTION HAVING AN ALKALINE PH THE STEP OF CONTACTING SAID ALKALINE AQUEOUS METAL-CONTAINING SOLUTION WITH A QUATERNARY AMMONIUM COMPOUND HAVING THREE LONG CHAIN ALIPHATIC HYDROCARBON GROUPS EACH HAVING FROM 8 TO 18 CARBON ATOMS TO EXTRACT SAID METALS FROM SAID ALKALINE AQUEOUS SOLUTION.
Claim 2
Dependent Claim
61 words
IN A PROCESS OF RECOVERING METALS SELECTED FROM THE GROUP CONSISTING OF VANADIUM AND MOLYBDENUM FROM AN AQUEOUS SOLUTION HAVING AN ALKALINE PH THE STEP OF CONTACTING SAID ALKALINE AQUEOUS METAL-CONTAINING SOLUTION WITH A QUATERNARY AMMONIUM COMPOUND HAVING THREE LONG CHAIN ALIPHATIC HYDROCARBON GROUPS EACH HAVING FROM 8 TO 18 CARBON ATOMS TO EXTRACT SAID METALS FROM SAID ALKALINE AQUEOUS SOLUTION.
References Cited (Backward Citations)
US2227833A
Cited
US2877250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |