US2793936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating nickel and cobalt compounds from each other
Assignee: Lonza Electric and Chemical Works Ltd
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Filing: 1955-07-13
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Granted: 1957-05-28
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Expires: 1975-07-13
Abstract
No abstract record available.
Inventors
- 👤 Voos Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:27
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0453; C22B23/0461; C01; C01G; C01G51/00; C01G51/05; C22B23/0476; C22B3/00; C22B3/20; C22B3/26; C22B3/262; C22B3/30; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A METHOD OF COMPLETELY SEPARATING NICKEL AND COBALT COMPOUNDS FROM EACH OTHER, COMPRISING THE STEPS OF SUBJECTING A MIXTURE OF NICKEL AND COBALT HYDROXIDES AT LEAST A PORTION OF WHICH ARE IN DIVALENT FORM TO OXIDATION IN A SUFFICIENTLY SMALL AMOUNT OF AN AQUEOUS MEDIUM TO PREVENT DISSOLUTION OF TRIVALENT NICKEL AND COBALT HYDROXIDES TO THAT SAID AQUEOUS MEDIUM AND SAID MIXTURE OF NICKEL AND COBALT HYDROXIDES IS IN TEH FORM OF A PASTY MASS, THEREBY FORMING A MIXTURE OF TRIVALENT NICKEL HYDROXIDE AND TRIVALENT COBALT HYDROXIDE DISTRIBUTED IN SAID AQUEOUS MEDIUM; SEPARATING SAID TRIVALENT NICKEL AND COBALT HYDROXIDES FROM SAID AQUEOUS MEDIUM; AND EXTRACTING THE THUS MIXTURE OF TRIVALENT NICKEL AND COBALT HYDROXIDES WITH AN AQUEOUS CHLORINE-CONTAINING LIQUOR IN AN AMOUNT SUFFICIENT TO CAUSE DISSOLUTION OF ALL
Claim 2
Independent Claim
128 words
A METHOD OF COMPLETELY SEPARATING NICKEL AND COBALT COMPOUNDS FROM EACH OTHER, COMPRISING THE STEPS OF SUBJECTING A MIXTURE OF NICKEL AND COBALT HYDROXIDES AT LEAST A PORTION OF WHICH ARE IN DIVALENT FORM TO OXIDATION IN A SUFFICIENTLY SMALL AMOUNT OF AN AQUEOUS MEDIUM TO PREVENT DISSOLUTION OF TRIVALENT NICKEL AND COBALT HYDROXIDES TO THAT SAID AQUEOUS MEDIUM AND SAID MIXTURE OF NICKEL AND COBALT HYDROXIDES IS IN TEH FORM OF A PASTY MASS, THEREBY FORMING A MIXTURE OF TRIVALENT NICKEL HYDROXIDE AND TRIVALENT COBALT HYDROXIDE DISTRIBUTED IN SAID AQUEOUS MEDIUM; SEPARATING SAID TRIVALENT NICKEL AND COBALT HYDROXIDES FROM SAID AQUEOUS MEDIUM; AND EXTRACTING THE THUS MIXTURE OF TRIVALENT NICKEL AND COBALT HYDROXIDES WITH AN AQUEOUS CHLORINE-CONTAINING LIQUOR IN AN AMOUNT SUFFICIENT TO CAUSE DISSOLUTION OF ALL
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |