US3096969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of potassium chloride
Assignee: PPG Industries Inc
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Filing: 1961-05-26
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Granted: 1963-07-09
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Expires: 1981-05-26
Abstract
No abstract record available.
Inventors
- 👤 Byron P Edmonds
- 👤 James B Dahms
- 👤 Helvenston Edward Phelps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:15
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A METHOD OF RECOVERING POTASSIUM CHLORIDE FROM A DEPOSIT HAVING A POTASSIUM CHLORIDE-RICH STRATUM AND CONTAINING A SODIUM CHLORIDE DISPOSED ABOVE A SODIUM CCHLORIDE DEPOSIT IN WHICH THE POTASSIUM CHLORIDE CONTENT IS RELATIVELY LOWER THAN IN THE POTASSIUM CHLORIDE-RICH DEPOSIT WHICH COMPRISES DRILLING A WELL INTO THE SODIUM CHLORIDE-RICH DEPOSIT, EXTRACTING SODIUM CHLORIDE WITH WATER FROM THE SODIUM CHLORIDE-RICH DEPOSIT UNTIL A CAVITY OF SUBSTANTIAL SIZE HAS BEEN PRODUCED AND THEN CONTINUING SUCH EXTRACTION AND RAISING THE ROOF OF THE CAVITY UNTIL THE ROOF REACHES THE POTASSIUM CHLORIDE-RICH DEPOSIT AND THEREAFTER EXTRACTING POTASSIUM CHLORIDE WITH WATER FROM THE POTASSIUM CHLORIDE-RICH STRATA.
Claim 2
Independent Claim
101 words
A METHOD OF RECOVERING POTASSIUM CHLORIDE FROM A DEPOSIT HAVING A POTASSIUM CHLORIDE-RICH STRATUM AND CONTAINING A SODIUM CHLORIDE DISPOSED ABOVE A SODIUM CCHLORIDE DEPOSIT IN WHICH THE POTASSIUM CHLORIDE CONTENT IS RELATIVELY LOWER THAN IN THE POTASSIUM CHLORIDE-RICH DEPOSIT WHICH COMPRISES DRILLING A WELL INTO THE SODIUM CHLORIDE-RICH DEPOSIT, EXTRACTING SODIUM CHLORIDE WITH WATER FROM THE SODIUM CHLORIDE-RICH DEPOSIT UNTIL A CAVITY OF SUBSTANTIAL SIZE HAS BEEN PRODUCED AND THEN CONTINUING SUCH EXTRACTION AND RAISING THE ROOF OF THE CAVITY UNTIL THE ROOF REACHES THE POTASSIUM CHLORIDE-RICH DEPOSIT AND THEREAFTER EXTRACTING POTASSIUM CHLORIDE WITH WATER FROM THE POTASSIUM CHLORIDE-RICH STRATA.
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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |