Patent US6182133B1 successfully refreshed from Google Patents.
US2848322A
Expired / Lapsed
US
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Separation of cobalt from nickel
Assignee: Merck and Co Inc
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Filing: 1955-07-13
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Granted: 1958-08-19
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Expires: 1975-07-13
Abstract
No abstract record available.
Inventors
- 👤 John B Conn
- 👤 William K Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:10
CPC Classifications
C; C01; C01G; C01G51/00; C01G51/01; C01G53/00; C01G53/01; C22; C22B; C22B3/00; C22B3/20; C22B3/42; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR REMOVING COBALT FROM NICKEL WHICH COMPRISES CONTACTING AN AMMONIACAL SOLUTION OF A DIVALENT NICKEL-AMMONIA COMPLEX AND HIGHER VALENCE COBALT-AMMONIA COMPLEXES WITH A CATION EXCHANGE RESIN IN ITS SALT FORM TO ADSORB THE NICKEL AND COBALT COMPLEXES ON THE RESIN AND ELUTING THE RESIN WITH AN AQUEOUS SOLUTION CONTAINING AMMONIUM HYDROSIXIDE AND AN AMMONIUM SALT TO REMOVE SUBSTANTIALLY ALL OF THE NICKEL FROM THE RESIN.
Claim 2
Dependent Claim
67 words
A PROCESS FOR REMOVING COBALT FROM NICKEL WHICH COMPRISES CONTACTING AN AMMONIACAL SOLUTION OF A DIVALENT NICKEL-AMMONIA COMPLEX AND HIGHER VALENCE COBALT-AMMONIA COMPLEXES WITH A CATION EXCHANGE RESIN IN ITS SALT FORM TO ADSORB THE NICKEL AND COBALT COMPLEXES ON THE RESIN AND ELUTING THE RESIN WITH AN AQUEOUS SOLUTION CONTAINING AMMONIUM HYDROSIXIDE AND AN AMMONIUM SALT TO REMOVE SUBSTANTIALLY ALL OF THE NICKEL FROM THE RESIN.
References Cited (Backward Citations)
US2711958A
Cited
FR1098071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |