US2869979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slurry solvent extraction process for the recovery of metals from solid materials
Assignee: Individual
•
Filing: 1955-08-09
•
Granted: 1959-01-20
•
Expires: 1975-08-09
Abstract
No abstract record available.
Inventors
- 👤 Robert R Grinstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:52
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/04; C22B60/0204; C22B60/0217; C22B60/0221; C22B60/0226; C22B60/0243; C22B60/0252; C22B60/026; C22B60/0291; C22B60/0295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN A SLURRY SOLVENT EXTRACTION PROCESS FOR RECOVERING AN ACTINIDE METAL VALUE FROM SOLID MATERIAL, THE STEPS COMPRISING CONTACTING AN ORGANIC PHOSPHATIC EXTRACTANT PHASE WITH AN AQUEOUS SLURRIED ADMIXTURE OF SAID SOLID MATERIAL, WHEREBY SAID METAL VALUES ARE LEACHED INTO THE AQUEOUS PHASE OF THE SLURRIED ADMIXTURE FORMING IONS
Claim 2
Dependent Claim
49 words
IN A SLURRY SOLVENT EXTRACTION PROCESS FOR RECOVERING AN ACTINIDE METAL VALUE FROM SOLID MATERIAL, THE STEPS COMPRISING CONTACTING AN ORGANIC PHOSPHATIC EXTRACTANT PHASE WITH AN AQUEOUS SLURRIED ADMIXTURE OF SAID SOLID MATERIAL, WHEREBY SAID METAL VALUES ARE LEACHED INTO THE AQUEOUS PHASE OF THE SLURRIED ADMIXTURE FORMING IONS
References Cited (Backward Citations)
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Cited
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Cited
US2806764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |