US2829965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of eliminating nickel contained in solutions of mixed salts of cobalt and nickel
Assignee: Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
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Filing: 1956-05-15
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Granted: 1958-04-08
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Expires: 1976-05-15
Abstract
No abstract record available.
Inventors
- 👤 Castagna Hermann
- 👤 Gravey Guy
- 👤 Reynaud Francis
- 👤 Roth Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:00
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0453; C22B23/0461; C22B23/0469; C22B23/0476; C22B23/0484
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS OF SEPARATING NICKEL FROM COBALT CONTAINED IN A MIXED SOLUTION OF THE SALTS OF COBALT AND NICKEL BY INNER ELECTROLYSIS, WHICH COMPRISES ADDING TO SAID SOLUTION A SOLID METAL MORE ELECTRONEGATIVE THAN NICKEL, A SOLID MATERIAL FROM THE GROUP CONSISTING OF SULPHARSENIDE AND ARSENIDE ORE OF FOBALT AND NICKEL, MORE ELECTROPOSITIVE THAN NICKEL, AND AN ACID; MAINTAINING THE MIXTURE AT A TEMPERATURE ABOVE 70*C. AND AT A PH OF ABOUT 1 TO 4.0 TO DEPOSIT THE NICKEL ON THE SOLID METAL AND MATERIAL, SEPARATING THE SOLIDS CONTAINING THE NICKEL AND A LITTLE COBALT FROM THE SOLUTION CONTAINING SUBSTANTIALLY ONLY COBALT, TREATING THE SOLIDS CONTAINING NICKEL AND COBALT TO DISSOLVE THE NICKEL AND COBALT AND RECOVER THE NICKEL.
Claim 2
Dependent Claim
119 words
A PROCESS OF SEPARATING NICKEL FROM COBALT CONTAINED IN A MIXED SOLUTION OF THE SALTS OF COBALT AND NICKEL BY INNER ELECTROLYSIS, WHICH COMPRISES ADDING TO SAID SOLUTION A SOLID METAL MORE ELECTRONEGATIVE THAN NICKEL, A SOLID MATERIAL FROM THE GROUP CONSISTING OF SULPHARSENIDE AND ARSENIDE ORE OF FOBALT AND NICKEL, MORE ELECTROPOSITIVE THAN NICKEL, AND AN ACID; MAINTAINING THE MIXTURE AT A TEMPERATURE ABOVE 70*C. AND AT A PH OF ABOUT 1 TO 4.0 TO DEPOSIT THE NICKEL ON THE SOLID METAL AND MATERIAL, SEPARATING THE SOLIDS CONTAINING THE NICKEL AND A LITTLE COBALT FROM THE SOLUTION CONTAINING SUBSTANTIALLY ONLY COBALT, TREATING THE SOLIDS CONTAINING NICKEL AND COBALT TO DISSOLVE THE NICKEL AND COBALT AND RECOVER THE NICKEL.
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) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |