US3235377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of an anion exchange resin to absorb cobalt from a solution containing cobalt and nickel
Assignee: Elkem Metals Co LP
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Filing: 1962-11-23
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Granted: 1966-02-15
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hard
- 👤 Howard S Sherry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:54
CPC Classifications
C; C01; C01G; C01G53/00; C01G53/01; C01G51/00; C01G51/01; C22; C22B; C22B3/00; C22B3/20; C22B3/42; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR SEPARATING COBALT AND NICKEL VALUES FROM MIXTURES OF COBALT AND NICKEL COMPOUNDS WHICH COMPRISES DISSOLVING THE NICKEL AND COBALT-BEARING MATERIALS IN AN AMMONIUM CHLORIDE SOLUTION TO PROVIDE A SOLUTION CONTAINING NICKEL CATIONS AND COMPLEX COBALT CHLORIDE ANIONS, THE AMMONIUM CHLORIDE CONCENTRATION IN THE SOLUTION BEING MAINTAINED BETWEEN ABOUT 4 N AND ABOUT 10 N AND THE TEMPERATURE OF THE SOLUTION BEING MAINTAINED ABOVE ABOUT 60*C.; CONTACTING SAID SOLUTION WITH AN ANION EXCHANGE RESIN TO ADSORB SAID COMPLEX COBALT ANIONS, THEREON; AND RECOVERING THE THUS TREATED NICKEL CONTAINING COBALT-DEPLETED SOLUTION.
Claim 2
Dependent Claim
92 words
A PROCESS FOR SEPARATING COBALT AND NICKEL VALUES FROM MIXTURES OF COBALT AND NICKEL COMPOUNDS WHICH COMPRISES DISSOLVING THE NICKEL AND COBALT-BEARING MATERIALS IN AN AMMONIUM CHLORIDE SOLUTION TO PROVIDE A SOLUTION CONTAINING NICKEL CATIONS AND COMPLEX COBALT CHLORIDE ANIONS, THE AMMONIUM CHLORIDE CONCENTRATION IN THE SOLUTION BEING MAINTAINED BETWEEN ABOUT 4 N AND ABOUT 10 N AND THE TEMPERATURE OF THE SOLUTION BEING MAINTAINED ABOVE ABOUT 60*C.; CONTACTING SAID SOLUTION WITH AN ANION EXCHANGE RESIN TO ADSORB SAID COMPLEX COBALT ANIONS, THEREON; AND RECOVERING THE THUS TREATED NICKEL CONTAINING COBALT-DEPLETED SOLUTION.
References Cited (Backward Citations)
CA579633A
Cited
US1978447A
Cited
US2726141A
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US2848322A
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US2831763A
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US2954276A
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US2993782A
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US3003866A
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US3082081A
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US3131998A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |