Patent US3341252A successfully refreshed from Google Patents.
US3341252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solution mining of sloping strata
Assignee: Kalium Chemicals Ltd
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Filing: 1965-04-07
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Granted: 1967-09-12
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Expires: 1985-04-07
Abstract
No abstract record available.
Inventors
- 👤 Dahms James Bowen
- 👤 Edmonds Byron Priestly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:35
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN SOLUTION MINING A SLOPING SUBTERRANEAN STRATUM OF SOLUBLE PRODUCT MINERALS DISPOSED ADJACENT SOLUBLE NONPRODUCT MINERALS, THE IMPROVEMENT WHICH COMPRISES PROVIDING IN COMMUNICATION WITH THE PRODUCT STRATUM A PLURALITY OF BORE HOLES SPACED IN THE DIRECTIONS OF THE STRIKE AND THE DIP THEREOF, AVOIDING COMMUNICATION BETWEEN BORE HOLES IN THE DIRECTION OF THE DIP BY PREFERENTIALLY ESTABLISHING COMMUNICATION BETWEEN BORE HOLES IN THE DIRECTION OF THE STRIKE, FEEDING SOLVENT THROUGH A FIRST BORE HOLE TO EXTRACT PRODUCT MINERALS AND WITHDRAWING EFFLUENT BEARING PRODUCT MINERALS THROUGH A SECOND BORE HOLE COMMUNICATING WITH THE FIRST BORE HOLE AND SPACED FROM SAID FIRST HOLE IN THE DIRECTION OF THE STRIKE THEREBY TO DEVELOP A SOLUTION MINING CAVITY IN THE DIRECTION OF THE STRIKE IN PREFERENCE TO THE DIRECTION OF THE DIP THEREBY MINIMIZING EXTRACTION OF NON-PRODUCT MINERALS.
Claim 2
Dependent Claim
134 words
IN SOLUTION MINING A SLOPING SUBTERRANEAN STRATUM OF SOLUBLE PRODUCT MINERALS DISPOSED ADJACENT SOLUBLE NONPRODUCT MINERALS, THE IMPROVEMENT WHICH COMPRISES PROVIDING IN COMMUNICATION WITH THE PRODUCT STRATUM A PLURALITY OF BORE HOLES SPACED IN THE DIRECTIONS OF THE STRIKE AND THE DIP THEREOF, AVOIDING COMMUNICATION BETWEEN BORE HOLES IN THE DIRECTION OF THE DIP BY PREFERENTIALLY ESTABLISHING COMMUNICATION BETWEEN BORE HOLES IN THE DIRECTION OF THE STRIKE, FEEDING SOLVENT THROUGH A FIRST BORE HOLE TO EXTRACT PRODUCT MINERALS AND WITHDRAWING EFFLUENT BEARING PRODUCT MINERALS THROUGH A SECOND BORE HOLE COMMUNICATING WITH THE FIRST BORE HOLE AND SPACED FROM SAID FIRST HOLE IN THE DIRECTION OF THE STRIKE THEREBY TO DEVELOP A SOLUTION MINING CAVITY IN THE DIRECTION OF THE STRIKE IN PREFERENCE TO THE DIRECTION OF THE DIP THEREBY MINIMIZING EXTRACTION OF NON-PRODUCT MINERALS.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |