Patent US3574599A successfully refreshed from Google Patents.
US3574599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral recovery
Assignee: ExxonMobil Upstream Research Co
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Filing: 1968-06-25
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Granted: 1971-04-13
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Expires: 1988-06-25
Abstract
Abstract LEACH SOLUTION TO SATISFY THE ACID REQUIREMENTS OF UNPRODUCTIVE SIDE REACTIONS. THE PERIOD DURING WHICH THE LEACH SOLUTION REMAINS IN THE ORE BODY IS REGULATED TO APPROACH THE OPTIMUM RESIDENCE TIME. A METHOD FOR THE SITU RECOVERY OF COPPER VALUES FROM COPPER ORES. IN THE PROCESS OF THIS INVENTION, THE SUBTERRANEAN FORMATION CONTAINING THE COPPER ORE IS PENETRATED BY A WELL EXTENDING FROM THE EARTH SURFACE TO THE DEPOSIT. A STRONG LEACH SOLUTION HAVING A HIGH FERRIC IRON CONTENT IS INJECTED BY WAY OF THE WELL INTO THE COPPER ORE DEPOSIT. SUFFICIENT MINERAL ACID IS INCLUDED IN THE
Inventors
- 👤 Gerald D Ortloff
- 👤 Claude E Cooke Jr
- 👤 Donald K Atwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:40
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/04; C22B3/06; C22B15/00; C22B15/0063; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/17
Claims Analysis
Total Claims: 0
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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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |