US3034773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining and extraction of ores
Assignee: Phillips Petroleum Co
•
Filing: 1958-03-24
•
Granted: 1962-05-15
•
Expires: 1978-03-24
Abstract
No abstract record available.
Inventors
- 👤 Harold R Legatski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:57
CPC Classifications
E; E21; E21C; E21C41/00; E21C41/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD OF RECOVERING POTASSIUM SALTS FROM UNDERGROUND POTASH BEDS WHICH COMPRISES FORMING A CARVEN ADJACENT THE POTASH BED TO BE MINED, REMOVING ORE FROM SAID BED, PASSING SAID ORE THROUGH A SERIES OF LEACHING ZONES WITHIN SAID CAVERN, PASSING A SOLVENT FOR THE POTASSIUM SALTS THROUGH SAID LEACHING ZONES IN SERIES TO CONTACT ORE THERIN, PASSING THE RESULTING SOLUTION TO THE SURFACES, REMOVING SAID POTASSIUM SALTS FROM SAID SOLUTION AT THE SURFACE, RETURNING THE SOLVENT HAVING THE SALTS REMOVED THEREFROM TO SAID CAVERN TO CONTACT ADDITIONAL ORE, AND RETURNING THE EXTRACTED ORE TO A POTASH BED FROM WHICH IT ORIGINALLY WAS MINED.
Claim 2
Independent Claim
103 words
THE METHOD OF RECOVERING POTASSIUM SALTS FROM UNDERGROUND POTASH BEDS WHICH COMPRISES FORMING A CARVEN ADJACENT THE POTASH BED TO BE MINED, REMOVING ORE FROM SAID BED, PASSING SAID ORE THROUGH A SERIES OF LEACHING ZONES WITHIN SAID CAVERN, PASSING A SOLVENT FOR THE POTASSIUM SALTS THROUGH SAID LEACHING ZONES IN SERIES TO CONTACT ORE THERIN, PASSING THE RESULTING SOLUTION TO THE SURFACES, REMOVING SAID POTASSIUM SALTS FROM SAID SOLUTION AT THE SURFACE, RETURNING THE SOLVENT HAVING THE SALTS REMOVED THEREFROM TO SAID CAVERN TO CONTACT ADDITIONAL ORE, AND RETURNING THE EXTRACTED ORE TO A POTASH BED FROM WHICH IT ORIGINALLY WAS MINED.
References Cited (Backward Citations)
US1133110A
Cited
US2161800A
Cited
US2218836A
Cited
US2495840A
Cited
US2699379A
Cited
US2625384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |