Patent US3089885A successfully refreshed from Google Patents.
US3089885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the selective recovery of uranium directly from uranium-bearing ores
Assignee: EIDP Inc
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Filing: 1959-06-23
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Granted: 1963-05-14
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Expires: 1979-06-23
Abstract
No abstract record available.
Inventors
- 👤 Jurgen M Kruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:24
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR THE SELECTIVE RECOVERY OF URANIUM FROM URANIUM-CONTAINING ORES WHICH CONSISTS ESSENTIALLY OF CONTACTING THE ORE DIRECTLY AT A PH OF ABOUT FROM 3 TO 9 WITH A SOLUTION CONSISTING ESSENTIALLY OF (A) AT LEAST ONE ORGANIC POLYDENTATE CHELATING AGENT SELECTED FROM THE GROUP CONSISTING OF SALICYIC ACID, SALICYLALDEHYDE, SALICYLAMIDE, 5,5''METHYLENEDISALICYLIC ACID, UNCROSSLINKED SALICYCLIC ACID FORMALDEHYDE POLYMERS, AND SCHIFF BASES PREPARED FROM SALICYLADEHYDE AND POLYAMINES, AND (B) INERT ORGANIC SOLVENT FOR SAID CHELATING AGENT.
Claim 2
Dependent Claim
76 words
A PROCESS FOR THE SELECTIVE RECOVERY OF URANIUM FROM URANIUM-CONTAINING ORES WHICH CONSISTS ESSENTIALLY OF CONTACTING THE ORE DIRECTLY AT A PH OF ABOUT FROM 3 TO 9 WITH A SOLUTION CONSISTING ESSENTIALLY OF (A) AT LEAST ONE ORGANIC POLYDENTATE CHELATING AGENT SELECTED FROM THE GROUP CONSISTING OF SALICYIC ACID, SALICYLALDEHYDE, SALICYLAMIDE, 5,5''METHYLENEDISALICYLIC ACID, UNCROSSLINKED SALICYCLIC ACID FORMALDEHYDE POLYMERS, AND SCHIFF BASES PREPARED FROM SALICYLADEHYDE AND POLYAMINES, AND (B) INERT ORGANIC SOLVENT FOR SAID CHELATING AGENT.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |