US2822262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of nickel from cobalt
Assignee: Viridian Inc Canada
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Filing: 1956-04-11
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Granted: 1958-02-04
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Expires: 1976-04-11
Abstract
No abstract record available.
Inventors
- 👤 Benoit Robert Lucien
- 👤 Lin Wei Cheng
- 👤 Mackiw Vladimir Nicolaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:26
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0476; C22B23/0492; C01; C01G; C01G51/00; C01G51/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A METHOD OF PRECIPITATING NICKEL VALUES FROM AN AMMONIATED SOLUTION CONTAINING DISSOLVED SALTS OF NICKEL AND COBALT IN THE RATIO OF COBALT TO NICKEL LESS THAN 100:1 BY REACTING THE SOLUTION WITH A SULPHUR FREE REDUCING GAS AT ELEVATED TEMPERATURE AND PRESSURE, THE IMPROVEMENT WHICH COMPRISES ADJUSTING THE AMMONIA CONTENT OF THE SOLUTION TO AT LEAST ABOUT 2 MOLS OF AMMONIA PER MOL OF NICKEL, CONDUCTING THE REDUCING REACTION IN THE PRESENCE OF ADDED FINELY DIVIDED COBALT METAL PARTICLES, AND CONTINUING THE REACTION TO PRECIPITATE NICKEL ON SAID COBALT METAL PARTICLES UNTIL A COBALT TO NICKEL RATIO IN THE SOLUTION GREATER THAN 100:1 IS ATTAINED, AND SEPARATING NICKELCOBALT METAL PARTICLES FROM THE SOLUTION LEAVING A RESIDUAL SOLUTION IN WHICH THE COBALT TO NICKEL RATIO IS GREATER THAN 100:1.
Claim 2
Dependent Claim
129 words
IN A METHOD OF PRECIPITATING NICKEL VALUES FROM AN AMMONIATED SOLUTION CONTAINING DISSOLVED SALTS OF NICKEL AND COBALT IN THE RATIO OF COBALT TO NICKEL LESS THAN 100:1 BY REACTING THE SOLUTION WITH A SULPHUR FREE REDUCING GAS AT ELEVATED TEMPERATURE AND PRESSURE, THE IMPROVEMENT WHICH COMPRISES ADJUSTING THE AMMONIA CONTENT OF THE SOLUTION TO AT LEAST ABOUT 2 MOLS OF AMMONIA PER MOL OF NICKEL, CONDUCTING THE REDUCING REACTION IN THE PRESENCE OF ADDED FINELY DIVIDED COBALT METAL PARTICLES, AND CONTINUING THE REACTION TO PRECIPITATE NICKEL ON SAID COBALT METAL PARTICLES UNTIL A COBALT TO NICKEL RATIO IN THE SOLUTION GREATER THAN 100:1 IS ATTAINED, AND SEPARATING NICKELCOBALT METAL PARTICLES FROM THE SOLUTION LEAVING A RESIDUAL SOLUTION IN WHICH THE COBALT TO NICKEL RATIO IS GREATER THAN 100:1.
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |