US3148130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of copper sponge from oxidized copper ores
Assignee: Banner Mining Co
•
Filing: 1961-05-12
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Granted: 1964-09-08
•
Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
- 👤 Eldred C Brace
- 👤 Frank E Horton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:38
CPC Classifications
C; C25; C25C; C25C1/00; C25C1/12; C22; C22B; C22B15/00; C22B15/0063; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE METHOD OF RECOVERING COPPER FROM AN ALKALINE SOLUTION CONTAINING SODIUM CUPRATE WHICH CONSISTS OF SUBJECTING THE SOLUTION TO ELECTROLYSIS AT FROM 5 TO 10 AMPS, PER SQUARE FOOT OF CATHODE SURFACE AT 3 TO 4 VOLTS WHEREBY CUO2 RADICALS ARE REDUCED TO CUO IONS WHICH ARE ATTRACTED TO THE CATHODE AND ARE DEPOSITED AT THE CATHODE AND FALL THEREFROM BY SPECIFIC GRAVITY AS COPPER OXIDE SPONGE.
Claim 2
Independent Claim
67 words
THE METHOD OF RECOVERING COPPER FROM AN ALKALINE SOLUTION CONTAINING SODIUM CUPRATE WHICH CONSISTS OF SUBJECTING THE SOLUTION TO ELECTROLYSIS AT FROM 5 TO 10 AMPS, PER SQUARE FOOT OF CATHODE SURFACE AT 3 TO 4 VOLTS WHEREBY CUO2 RADICALS ARE REDUCED TO CUO IONS WHICH ARE ATTRACTED TO THE CATHODE AND ARE DEPOSITED AT THE CATHODE AND FALL THEREFROM BY SPECIFIC GRAVITY AS COPPER OXIDE SPONGE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |