US3128247A
Expired / Lapsed
US
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Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1960-11-07
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Granted: 1964-04-07
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Expires: 1980-11-07
Abstract
No abstract record available.
Inventors
- 👤 Cohen Pierre
- 👤 Amavis Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:48
CPC Classifications
B; B01; B01J; B01J41/00; B01J41/08; B01J41/10; B01J39/00; B01J39/02; B01J39/08; B01J39/09; G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A PROCESS FOR THE EXCHANGER OF IONS IN AN AQUEOUS SOLUTION CONTAINING AT LEAST ONE RADIOACTIVE CATION AND AT LEAST ONE RADIOACTIVE ANION, THE STEPS OF CONTACTING THE SOLUTION WITH A POWDER CONTAINING BASIC HYDRATED SULFATE OF LEAD, THE SOLUTION HAVING A PH BETWEEN 7 AND A VALUE LESS THAN 7, THE POWDER BEING RELATIVELY INSOLUBLE IN THE SOLUTION, THEN ADJUSTING THE PH OF THE SOLUTUON TO A VALUE FROM 7 TO A VALUE GREATER THAN 7 AND THEN CONTACTING THE SOLUTION WITH THE POWDER, THE POWDER BEING RELATIVELY INSOLUBLE IN THE SOLUTION HAVING A PH FROM 7 TO A VALUE GREATER THAN 7.
Claim 2
Dependent Claim
104 words
A PROCESS FOR THE EXCHANGE OF IONS IN AN AQUEOUS SOLUTION CONTAINING CATIONS SELECTED FROM THE GROUP CONSISTING OF NH4+, CA++, (CO(NH3)6)+++, SR++C''E, PM, Y, NA+ AND ANIONS SELECTED FROM THE GROUP CONSISTING OF CI-, SO4-, NO3-, TEO4-, THE STEPS OF CONTACTING THE SOLUTION WITH A POWDER CONTAINING BASIC HYDRATED SULFATE OF LEAD, THE SOLUTION HAVING A PH FROM 7 TO A VALUE LESS THAN 7, THE POWDER BEING RELATIVELY INSOLUBLE IN THE SOLUTION, THEN ADJUSTING THE PH OF THE SOLUTION FROM 7 TO VALUES GREATER THAN 7 AND THEN CONTACTING THE SOLUTION WITH THE POWDER, THE POWDER BEING RELATIVELY INSOLUBLE IN THE SOLUTION.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |