US3262741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solution mining of potassium chloride
Assignee: PPG Industries Inc
•
Filing: 1965-04-01
•
Granted: 1966-07-26
•
Expires: 1985-04-01
Abstract
No abstract record available.
Inventors
- 👤 Edmonds Byron Priestly
- 👤 Dahms James Bowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:45
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF MINING POTASSIUM CHLORIDE WHICH COM PRISES FEEDING WATER INTO A SUBTERRANEAN POTASSIUM CHLORIDE-RICH DEPOSIT, DISSLOVING POTASSIUM CHLORIDE FROM THE DEPOST TO FORM A CAVITY THEREIN, WITHDRAWING AN AQUEOUS SOLUTION OF POTASSIUM CHLORIDE FROM THE CAVITY BEFORE IT BECOMES SATURATED, FORWARDING THE PLURALITY SATURATED SOLUTION TO AN EXISTING DEVELOPED CAVITY IN A POTASSIUM CHLORIDE-RICH DEPOSIT AND THEREIN DISSOLVING FURTHER POTASSIUM CHLORIDE THEREBY FORMING A MORE CONCENTRARED SOLUTION.
Claim 2
Independent Claim
69 words
A METHOD OF MINING POTASSIUM CHLORIDE WHICH COM PRISES FEEDING WATER INTO A SUBTERRANEAN POTASSIUM CHLORIDE-RICH DEPOSIT, DISSLOVING POTASSIUM CHLORIDE FROM THE DEPOST TO FORM A CAVITY THEREIN, WITHDRAWING AN AQUEOUS SOLUTION OF POTASSIUM CHLORIDE FROM THE CAVITY BEFORE IT BECOMES SATURATED, FORWARDING THE PLURALITY SATURATED SOLUTION TO AN EXISTING DEVELOPED CAVITY IN A POTASSIUM CHLORIDE-RICH DEPOSIT AND THEREIN DISSOLVING FURTHER POTASSIUM CHLORIDE THEREBY FORMING A MORE CONCENTRARED SOLUTION.
References Cited (Backward Citations)
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Cited
US2861428A
Cited
US2880587A
Cited
US2850270A
Cited
US2952449A
Cited
US3022986A
Cited
US3096969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |