Patent US3278233A successfully refreshed from Google Patents.
US3278233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In situ leaching of subterranean deposits
Assignee: Mobil Oil AS
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Filing: 1964-03-27
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Granted: 1966-10-11
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Expires: 1984-03-27
Abstract
No abstract record available.
Inventors
- 👤 Hurd Billy George
- 👤 John L Fitch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:02
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN IN SITU LEACHING METHOD FOR RECOVERING SUBSTANCES CAPABLE OF REACHING WITH AQUEOUS ACIDIC SOLUBILIZERS TO FORM SOLUTIONS MISCIBLE WITH WATER FROM A SUBSURFACE MINERAL DEPOSIT, COMPRISING THE STEPS OF: (A) FLOODING THE DEPOSIT WITH WATER UNTIL ITS SOLID SURFACES ARE WETTED AND ITS OPENINGS ARE AT LEAST IN PART FILLED WITH WATER, (B) PASSING AIR THROUGH THE WATER-WETTED DEPOSIT FOR DISPLACING AIR-STRIPPABLE WATER FROM THE DEPOSIT TO INCREASE THE PERMEABILITY TO GAS OF THE DEPOSIT SUFFCIENTLY TO PERMIT A CONTINUOUS FLOW OF AIR THERE THROUGH, (C) PASSING AN ACIDIC GAS INTO THE WATER-WETTED DEPOSIT TO PRODUCE IN SITU AN AQUEOUS ACIDIC SOLUBILIZER WHEREBY SUBSTANCES CAPABLE OF REACTING WITH AQUEOUS ACIDIC SOLUBILIZERS FORM SOLUTIONS MISCIBLE WITH WATER, AND
Claim 2
Dependent Claim
118 words
AN IN SITU LEACHING METHOD FOR RECOVERING SUBSTANCES CAPABLE OF REACHING WITH AQUEOUS ACIDIC SOLUBILIZERS TO FORM SOLUTIONS MISCIBLE WITH WATER FROM A SUBSURFACE MINERAL DEPOSIT, COMPRISING THE STEPS OF: (A) FLOODING THE DEPOSIT WITH WATER UNTIL ITS SOLID SURFACES ARE WETTED AND ITS OPENINGS ARE AT LEAST IN PART FILLED WITH WATER, (B) PASSING AIR THROUGH THE WATER-WETTED DEPOSIT FOR DISPLACING AIR-STRIPPABLE WATER FROM THE DEPOSIT TO INCREASE THE PERMEABILITY TO GAS OF THE DEPOSIT SUFFCIENTLY TO PERMIT A CONTINUOUS FLOW OF AIR THERE THROUGH, (C) PASSING AN ACIDIC GAS INTO THE WATER-WETTED DEPOSIT TO PRODUCE IN SITU AN AQUEOUS ACIDIC SOLUBILIZER WHEREBY SUBSTANCES CAPABLE OF REACTING WITH AQUEOUS ACIDIC SOLUBILIZERS FORM SOLUTIONS MISCIBLE WITH WATER, AND
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |