Patent US3167402A successfully refreshed from Google Patents.
US3167402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of ores
Assignee: Baker Petrolite LLC
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Filing: 1960-01-04
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Granted: 1965-01-26
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Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Gilbert J Samuelson
- 👤 Albert D Franse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:58
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/026; C22B3/00; C22B3/20; C22B3/22; C22B3/26; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
A METHOD OF PURIFYING METAL-BEARING MATERIALS BY SOLVENT EXTRACTION, COMPRISING: MIXING AN AQUEOUS SOLUTION CONTAINING METAL VALUES AND IMPURITIES WITH AN ORGANIC SOLVENT COMPRISING A FIRST-ADDED HYDROCARBON CONTAINING THEREIN AN EXTRACTANT CAPABLE OF SELECTIVELY EXTRACTING THE METAL VALUES FROM THE AQUEOUS SOLUTION, THEREBY PRODUCING AN ORGANIC EXTRACT PHASE AND AN AQUEOUS RAFFINATE PHASE; SEPARATING SAID PHASES BY DIFFERENCE IN SPECIFIC GRAVITY TO PRODUCE A SEPARATED ORGANIC PHASE AND A SEPARATED AQUEOUS PHASE CONTAINING SMALL AMOUNTS OF RESIDUAL METAL VALUES, RESIDUAL FIRST-ADDED HYDROCARBON AND RESIDUAL EXTRACTANT AS RESIDUAL IMPURITIES; RECOVERING METAL VALUES FROM THE SEPARATED ORGANIC EXTRACT PHASE; MIXING WITH THE SEPARATED AQUEOUS PHASE WHILE CONTAINING SAID SMALL AMOUNTS OF RESIDUAL METAL VALUES, FIRST-ADDED HYDROCARBON AND EXTRACTANT AS RESIDUAL IMPURITIES A SUFFICIENT AMOUNT OF A SECOND-ADDED HYDROCARBON HAVING SELECTIVE SOLUBILITY TOWARD SAID RESIDUAL IMPURITIES TO FORM A HYDROCARBON-CONTINUOUS MIXTURE IN WHICH THE HYDROCARBON PHASE CONTAINS SUBSTANTIALLY ALL SAID RESIDUAL EXTRACTANT AND A SUBSTANTIAL PORTION OF SAID RESIDUAL METAL VALUES AND RESIDUAL FIRST-ADDED HYDROCARBON PRESENT AS IMPURITIES IN SAID SEPARATED AQUEOUS PHASE, SAID HYDROCARBON-CONTINUOUS MIXTURE CONTAINING A DISPERSED AQUEOUS PHASE COMPRISING DROPLETS OF SAID SEPARATED AQUEOUS PHASE CORRESPONDINGLY DEPLETED IN CONTENT OF SAID RESIDUAL EXTRACTANT, METAL VALUES AND FIRST-ADDED HYDROCARBON; ESTABLISHING BETWEEN SPACED ELECTRODES A HIGH-VOLTAGE ELEC-
Claim 2
Independent Claim
205 words
A METHOD OF PURIFYING METAL-BEARING MATERIALS BY SOLVENT EXTRACTION, COMPRISING: MIXING AN AQUEOUS SOLUTION CONTAINING METAL VALUES AND IMPURITIES WITH AN ORGANIC SOLVENT COMPRISING A FIRST-ADDED HYDROCARBON CONTAINING THEREIN AN EXTRACTANT CAPABLE OF SELECTIVELY EXTRACTING THE METAL VALUES FROM THE AQUEOUS SOLUTION, THEREBY PRODUCING AN ORGANIC EXTRACT PHASE AND AN AQUEOUS RAFFINATE PHASE; SEPARATING SAID PHASES BY DIFFERENCE IN SPECIFIC GRAVITY TO PRODUCE A SEPARATED ORGANIC PHASE AND A SEPARATED AQUEOUS PHASE CONTAINING SMALL AMOUNTS OF RESIDUAL METAL VALUES, RESIDUAL FIRST-ADDED HYDROCARBON AND RESIDUAL EXTRACTANT AS RESIDUAL IMPURITIES; RECOVERING METAL VALUES FROM THE SEPARATED ORGANIC EXTRACT PHASE; MIXING WITH THE SEPARATED AQUEOUS PHASE WHILE CONTAINING SAID SMALL AMOUNTS OF RESIDUAL METAL VALUES, FIRST-ADDED HYDROCARBON AND EXTRACTANT AS RESIDUAL IMPURITIES A SUFFICIENT AMOUNT OF A SECOND-ADDED HYDROCARBON HAVING SELECTIVE SOLUBILITY TOWARD SAID RESIDUAL IMPURITIES TO FORM A HYDROCARBON-CONTINUOUS MIXTURE IN WHICH THE HYDROCARBON PHASE CONTAINS SUBSTANTIALLY ALL SAID RESIDUAL EXTRACTANT AND A SUBSTANTIAL PORTION OF SAID RESIDUAL METAL VALUES AND RESIDUAL FIRST-ADDED HYDROCARBON PRESENT AS IMPURITIES IN SAID SEPARATED AQUEOUS PHASE, SAID HYDROCARBON-CONTINUOUS MIXTURE CONTAINING A DISPERSED AQUEOUS PHASE COMPRISING DROPLETS OF SAID SEPARATED AQUEOUS PHASE CORRESPONDINGLY DEPLETED IN CONTENT OF SAID RESIDUAL EXTRACTANT, METAL VALUES AND FIRST-ADDED HYDROCARBON; ESTABLISHING BETWEEN SPACED ELECTRODES A HIGH-VOLTAGE ELEC-
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) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |