US2651562A
Expired / Lapsed
US
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Separation of nickel contained in nickeliferous cobalt alloys
Assignee: Societe Generale Metallurgique de Hoboken SA
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Filing: 1949-12-31
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Granted: 1953-09-08
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Expires: 1969-12-31
Abstract
No abstract record available.
Inventors
- 👤 Merre Marcel De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:19
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0476; C22B23/0484
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN THE SEPARATION OF NICKEL FROM COBALT CONTAINED IN A COBALT-NICKEL ALLOY, THE PROCESS WHICH COMPRISES HEATING SUCH AN ALLOY WITH A SUSPENSION OF SULFUR IN A DILUTE AQUEOUS INORGANIC ACID SOLUTION HAVING A PH WITHIN THE RANGE OF FROM ABOUT 1 TO 5, STARTING THE TREATMENT WITH A LOW PH VALUE WITHIN SAID RANGE AND PERMITTING IT TO RISE DURING DISSOLUTION OF THE ALLOY TO THE UPPER END OF THE RANGE, WHEREBY THE NICKEL PRECIPITATES IN THE FORM OF NICKEL SULFIDE AND THE COBALT GOES INTO SOLUTION, AND REMOVING THE PRECIPITATE.
Claim 2
Dependent Claim
92 words
IN THE SEPARATION OF NICKEL FROM COBALT CONTAINED IN A COBALT-NICKEL ALLOY, THE PROCESS WHICH COMPRISES HEATING SUCH AN ALLOY WITH A SUSPENSION OF SULFUR IN A DILUTE AQUEOUS INORGANIC ACID SOLUTION HAVING A PH WITHIN THE RANGE OF FROM ABOUT 1 TO 5, STARTING THE TREATMENT WITH A LOW PH VALUE WITHIN SAID RANGE AND PERMITTING IT TO RISE DURING DISSOLUTION OF THE ALLOY TO THE UPPER END OF THE RANGE, WHEREBY THE NICKEL PRECIPITATES IN THE FORM OF NICKEL SULFIDE AND THE COBALT GOES INTO SOLUTION, AND REMOVING THE PRECIPITATE.
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) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |