US2970051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation of lead from solutions
Assignee: Viridian Inc Canada
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Filing: 1959-05-01
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Granted: 1961-01-31
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Expires: 1979-05-01
Abstract
No abstract record available.
Inventors
- 👤 Mackiw Vladimir Nicolaus
- 👤 Zubryckyi Nicolas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:09
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0453; C22B23/0461; C22B11/00; C22B11/04; C22B15/00; C22B15/0063; C22B15/0084; C22B15/0089; C22B3/00; C22B3/20; C22B3/44; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN A HYDROMETALLURGICAL PROCESS FOR PRODUCING A NON-FERROUS METAL SELECTED FROM THE GROUP CONSISTING OF SILVER, COPPER, NICKEL AND COBALT SUBSTANTIALLY FREE FROM LEAD FROM METAL BEARING MATERIAL WHICH CONTAINS VALUES OF LEAD AND OF A LEAST ONE OF SAID METALS IN WHICH THE METAL BEARING MATERIAL IS LEACHED WITH A LEACH SOLUTION TO EXTRACXT AND DISSOLVE AT LEAST ONE OF SAID METALS IN THE SOLUTION AND LEACH SOLUTION IS SEPARATED FROM UNDISSOLVED RESIDUE, THE IMPROVEMENT WHICH COMPRISES THE STEPS OF CONTACTING CLARIFIED LEACH SOLUTION WITH THE HYROXIDE FLOC OF A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, VANADIUM, CHRONIUM, MANGANESE AND IRON WHICH IS INSOLUBLE IN THE SOLUTION WHEREBY LEAD PRESENT IN THE SOLUTION IS ADSORBED BY THE METAL HYROXIDE FLOC, AND THEREAFTER SEPARATING LEACH SOLUTION FROM SAID METAL HYDROXIDE FLOC.
Claim 2
Dependent Claim
133 words
IN A HYDROMETALLURGICAL PROCESS FOR PRODUCING A NON-FERROUS METAL SELECTED FROM THE GROUP CONSISTING OF SILVER, COPPER, NICKEL AND COBALT SUBSTANTIALLY FREE FROM LEAD FROM METAL BEARING MATERIAL WHICH CONTAINS VALUES OF LEAD AND OF A LEAST ONE OF SAID METALS IN WHICH THE METAL BEARING MATERIAL IS LEACHED WITH A LEACH SOLUTION TO EXTRACXT AND DISSOLVE AT LEAST ONE OF SAID METALS IN THE SOLUTION AND LEACH SOLUTION IS SEPARATED FROM UNDISSOLVED RESIDUE, THE IMPROVEMENT WHICH COMPRISES THE STEPS OF CONTACTING CLARIFIED LEACH SOLUTION WITH THE HYROXIDE FLOC OF A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, VANADIUM, CHRONIUM, MANGANESE AND IRON WHICH IS INSOLUBLE IN THE SOLUTION WHEREBY LEAD PRESENT IN THE SOLUTION IS ADSORBED BY THE METAL HYROXIDE FLOC, AND THEREAFTER SEPARATING LEACH SOLUTION FROM SAID METAL HYDROXIDE FLOC.
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) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |