US3777003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous vat leaching process
Assignee: C0NSOLIDATION COAL Co
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Filing: 1970-09-01
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Granted: 1973-12-04
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Expires: 1990-09-01
Abstract
Abstract THE PRESENT INVENTION RELATES TO A METHOD FOR LEACHING A MINERAL FROM AN ORE CONTAINING SAID MINERAL WHEREIN A LEACHING SOLUTION IS PASSED UPWARDLY THROUGH A DOWNWARDLY FLOWING BED OR ORE. THE LEACHING SOLUTION IS PASSED THROUGH THE ORE UNDER CONDITIONS OF QUIESCENT FLOW WHEREBY THE MINERAL IS DISSOLVED FROM THE MINERAL ORE AND IS WITHDRAWN FROM THE UPPER PORTION OF A VESSEL CONTAINING SAID BED OR ORE. THE SPENT ORE IS WITHDRAWN FROM THE BOTTOM OF SAID VESSEL AND PASSED TO A SECOND VESSEL WHEREIN THE ORE IS WASHED FREE FROM ANY ENTRAINED LEACHING SOLUTION.
Inventors
- 👤 A Mitterer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:11
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/04; B; B01; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/22; B01D2011/002; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |