US2860031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for utilizing organic orthophosphate extractants
Assignee: Individual
•
Filing: 1956-06-29
•
Granted: 1958-11-11
•
Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert R Grinstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:41
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/026; B; B01; B01D; B01D11/00; B01D11/02; B01D11/028; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A PROCESS FOR EXTRACING A URANIUM METAL VALUE FROM A SOLID MATERIAL, THE STEPS COMPRISING LEACHING THE METAL VALUE FROM SAID MATERIAL WITH AN AQUEOUS SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER, SULFURIC, NITRIC, HYDROCHLORIC, AND PHOSPHORIC ACIDS, TO PRODUCE A SOLUTION THEREOF IN WHICH SAID METAL EXISTS IN AT LEAST A TRIVALENT OXIDATION STATE, EXTRACING METAL VALUE FROM SAID AQUEOUS ACID LEACH SOLUTION WITH A PHASE INCLUDING A SOLVENT-DILUENT AND MONO- AND DI-ALKYL ORTHOPHOSPHORIC ACID ESTERS HAVING 9 TO 17 CARBON ATOMS IN THE ALKYL SUBSTITUENT AND AN ORGANIC-PHOSPHOROUS LINKING OXYGEN BOND SITUATED INWARD OF THE TERMINAL CARBON ATOMS OF THE ALKYL CHAINS, AND RECOVERING THE METAL VALUE FROM THE EXTRACT PHASE.
Claim 2
Dependent Claim
115 words
IN A PROCESS FOR EXTRACING A URANIUM METAL VALUE FROM A SOLID MATERIAL, THE STEPS COMPRISING LEACHING THE METAL VALUE FROM SAID MATERIAL WITH AN AQUEOUS SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER, SULFURIC, NITRIC, HYDROCHLORIC, AND PHOSPHORIC ACIDS, TO PRODUCE A SOLUTION THEREOF IN WHICH SAID METAL EXISTS IN AT LEAST A TRIVALENT OXIDATION STATE, EXTRACING METAL VALUE FROM SAID AQUEOUS ACID LEACH SOLUTION WITH A PHASE INCLUDING A SOLVENT-DILUENT AND MONO- AND DI-ALKYL ORTHOPHOSPHORIC ACID ESTERS HAVING 9 TO 17 CARBON ATOMS IN THE ALKYL SUBSTITUENT AND AN ORGANIC-PHOSPHOROUS LINKING OXYGEN BOND SITUATED INWARD OF THE TERMINAL CARBON ATOMS OF THE ALKYL CHAINS, AND RECOVERING THE METAL VALUE FROM THE EXTRACT PHASE.
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |