Patent US2885259A successfully refreshed from Google Patents.
US2885259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovery of constituents of ores
Assignee: Individual
•
Filing: 1955-06-21
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Granted: 1959-05-05
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Expires: 1975-06-21
Abstract
No abstract record available.
Inventors
- 👤 Robert F Mccullough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:26
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0208; C01; C01F; C01F7/00; C01F7/02; C01F7/04; C01F7/06; C01F7/0673; C22B3/00; C22B3/04; C22B3/06; C22B3/08; C22B60/0217; C22B60/0221; C22B60/0226; C22B60/0234; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE PROCESS OF RECOVERING MINERAL VALUES FROM LEACHED ZONE MATERIAL WHICH COMPRISES ADMIXING THE MATERIAL WITH ALKALI METAL CARBONATE, CALCINING THE ADMIXTURE AT A TEMPERATURE IN THE RANGE BETWEEN ABOUT 600* F. AND ABOUT 2000* F., DIGESTING THE CACINED ADMIXTURE WITH DILUTE SULFURIC ACID, SEPARATING ISOLUBLE MATERIAL FROM THE SOLUTION OF WATER SOLUBLE REACTION PRODUCTS ADN RECOVERING AT LEAST ONE OF THE VALUES SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, PHOSPHORUS AND URANIUM VALUES FROM SAID SOLUTION.
Claim 2
Dependent Claim
77 words
THE PROCESS OF RECOVERING MINERAL VALUES FROM LEACHED ZONE MATERIAL WHICH COMPRISES ADMIXING THE MATERIAL WITH ALKALI METAL CARBONATE, CALCINING THE ADMIXTURE AT A TEMPERATURE IN THE RANGE BETWEEN ABOUT 600* F. AND ABOUT 2000* F., DIGESTING THE CACINED ADMIXTURE WITH DILUTE SULFURIC ACID, SEPARATING ISOLUBLE MATERIAL FROM THE SOLUTION OF WATER SOLUBLE REACTION PRODUCTS ADN RECOVERING AT LEAST ONE OF THE VALUES SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, PHOSPHORUS AND URANIUM VALUES FROM SAID SOLUTION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |