Patent US2915388A successfully refreshed from Google Patents.
US2915388A
Expired / Lapsed
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Separation of nickel and cobalt
Assignee: Wyeth Holdings LLC
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Filing: 1957-11-19
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Granted: 1959-12-01
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Expires: 1977-11-19
Abstract
No abstract record available.
Inventors
- 👤 Alfred G Lyle
- 👤 Philip E Brubaker
- 👤 Arthur J Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:28
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0476; C22B23/0484
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A PROCESS FOR THE SEPARATE RECOVERY OF NICKLE AND COBALT FROM A SOLUTION WHICH CONTAINS DISSOLVED SALTS OF NICKEL, COBALT AND ZINC IN WHICH NICKEL IS PRECIPITATED AS PRODUCT METAL BY REACTING THE SOULATION AT ELEVATED TEMPERATURE AND PRESSURE WITH A SULPHUR-FREE REDUCING GAS AND IS SEPARATED FROM THE SOULATION AND RESIDUAL DISSOLVED NICKLE VALUES ARE PRECIPITATED FROM THE SOULATION TO LEAVE A SUBSTANTIALLY NICKLE-FREE SOULATION WHICH CONTAINS DISSOLVED COBALT VALUES, THE IMPROVEMENT WHICH COMPRISES ADJUSTING THE ZINC CONTENT OF THE NICKEL-COBALT-ZINC CONTAINING SOULATION TO A MOL RATIO OF ZINC TO NICKEL WITHIN THE RANGE OF FROM ABOUT 0.5:1 TO ABOUT 5:1 PRIOR TO THE PRECIPITATION THEREFROM OF DISSOLVED NICKEL VALUES AS PRODUCT NICKEL METAL.
Claim 2
Dependent Claim
116 words
IN A PROCESS FOR THE SEPARATE RECOVERY OF NICKLE AND COBALT FROM A SOLUTION WHICH CONTAINS DISSOLVED SALTS OF NICKEL, COBALT AND ZINC IN WHICH NICKEL IS PRECIPITATED AS PRODUCT METAL BY REACTING THE SOULATION AT ELEVATED TEMPERATURE AND PRESSURE WITH A SULPHUR-FREE REDUCING GAS AND IS SEPARATED FROM THE SOULATION AND RESIDUAL DISSOLVED NICKLE VALUES ARE PRECIPITATED FROM THE SOULATION TO LEAVE A SUBSTANTIALLY NICKLE-FREE SOULATION WHICH CONTAINS DISSOLVED COBALT VALUES, THE IMPROVEMENT WHICH COMPRISES ADJUSTING THE ZINC CONTENT OF THE NICKEL-COBALT-ZINC CONTAINING SOULATION TO A MOL RATIO OF ZINC TO NICKEL WITHIN THE RANGE OF FROM ABOUT 0.5:1 TO ABOUT 5:1 PRIOR TO THE PRECIPITATION THEREFROM OF DISSOLVED NICKEL VALUES AS PRODUCT NICKEL METAL.
References Cited (Backward Citations)
US2722480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |