US2954276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrometallurgical process
Assignee: KERR MC GEE OIL IND Inc
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Filing: 1957-01-23
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Granted: 1960-09-27
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Expires: 1977-01-23
Abstract
No abstract record available.
Inventors
- 👤 Wayne C Hazen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:02
CPC Classifications
C; C01; C01G; C01G1/00; B; B01; B01D; B01D15/00; C22; C22B; C22B3/00; C22B3/20; C22B3/42; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A HYDROMETALLURGICAL PROCESS FOR CONCENTRATING METAL VALUES COMPRISING CONTACTING AN AQUEOUS SOLUTION CONTAINING CATIONS OF AT LEAST ONE METAL SELECTED FROM THE CLASS CONSISTING OF COBALT, NICKEL, COPPER, AND ZINC WITH A WATER-INSOLUBLE, SOLID, WEAK BASE AMINE RESIN CAPABLE OF FORMING A METAL AMINE COMPLEX WITH THE METAL TO BE CONCENTRATED, THE METAL VALUES BEING ABSORBED BY THE RESIN AND THE AQUEOUS SOLUTION HAVING A PH OF AT LEAST ABOUT 3.0 BUT LESS THAN THE PH AT WHICH A METAL CONTAINING COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE HYDROXIDES AND BASIC SALTS OF COBALT, NICKEL, COPPER AND ZINC IS PRECIPITATED THEREFROM.
Claim 2
Dependent Claim
102 words
A HYDROMETALLURGICAL PROCESS FOR CONCENTRATING METAL VALUES COMPRISING CONTACTING AN AQUEOUS SOLUTION CONTAINING CATIONS OF AT LEAST ONE METAL SELECTED FROM THE CLASS CONSISTING OF COBALT, NICKEL, COPPER, AND ZINC WITH A WATER-INSOLUBLE, SOLID, WEAK BASE AMINE RESIN CAPABLE OF FORMING A METAL AMINE COMPLEX WITH THE METAL TO BE CONCENTRATED, THE METAL VALUES BEING ABSORBED BY THE RESIN AND THE AQUEOUS SOLUTION HAVING A PH OF AT LEAST ABOUT 3.0 BUT LESS THAN THE PH AT WHICH A METAL CONTAINING COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE HYDROXIDES AND BASIC SALTS OF COBALT, NICKEL, COPPER AND ZINC IS PRECIPITATED THEREFROM.
References Cited (Backward Citations)
US2628165A
Cited
US2831763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |