Patent US3723095A successfully refreshed from Google Patents.
US3723095A
Expired / Lapsed
US
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Extraction of copper and nickel from manganese nodules
Assignee: Kennecott Utah Copper LLC
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Filing: 1970-07-16
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Granted: 1973-03-27
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Expires: 1990-07-16
Abstract
Abstract COPPER AND NICKEL MAY BE LEACHED FROM COMPLEX ORES CONTAINING MANGANESE, IRON, COPPER, NICKEL BY LEACHING THE COMPLEX ORE WITH A SOLUTION CONTAINING MANGANOUS IONS.
Inventors
- 👤 R Skarbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:34
CPC Classifications
C; C22; C22B; C22B47/00; C22B47/0018; C22B47/0045; C22B47/0054; C22B47/0072; C22B3/00; C22B3/04; C22B3/12; C22B3/14; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S423/00; Y10S423/04
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |