Patent US2811416A successfully refreshed from Google Patents.
US2811416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of removing plutonium values from solution with group ivb metal phospho-silicate compositions
Assignee: Individual
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Filing: 1944-08-26
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Granted: 1957-10-29
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Expires: 1964-08-26
Abstract
No abstract record available.
Inventors
- 👤 Edwin R Russell
- 👤 Arthur W Adamson
- 👤 George E Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:09
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/001; C01G56/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A PROCESS OF REMOVING PLUTONIUM VALUES FROM AN AQUEOUS SOLUTION, COMPRISING PROVIDING AN AQUEOUS SALT SOLUTION CONTAINING SALT OF METAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM, TITANIUM, HAFNIUM, THORIUM AND MIXTURES THEREOF: ADDING AN AQUEOUS SOLUTION OF A SILICATE AND PHOSPHORIC ACID ANIONS TO SAID SALT SOLUTION, THE MOLAR RATIO OF SAID PHOSPHORIC ACID IONS: METAL IONS: SILICATE IONS RANGING FROM 40:31:51 TO 40:31:10,000: ACIDIFYING SAID AQUEOUS SALT SOLUTION WHEREBY A PRECIPITATE FORMS; SEPARATING SAID PRECIPITATE FROM THE AQUEOUS SOLUTION; WASHING AND DRYING SAID PRECIPITATE; ACIDIFYING THE AQUEOUS PLUTONIUM-CONTAINING SOLUTION TO MAKE IT FROM 1 TO 3 M IN ACID, SAID ACID BEING SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID AND HYDROCHLORIC ACID, AND ALSO FROM 0.02 TO 0.4 M IN PHOSPHORIC ACID; PASSING SAID SOLUTION OVER SAID PRECIPITATE WHEREBY THE PLUTONIUM VALUES ARE ADSORBED BY SAID PRECIPITATE: AND SEPARATING THE PRECIPITATE FROM THE AQUEOUS SOLUTION.
Claim 2
Dependent Claim
148 words
A PROCESS OF REMOVING PLUTONIUM VALUES FROM AN AQUEOUS SOLUTION, COMPRISING PROVIDING AN AQUEOUS SALT SOLUTION CONTAINING SALT OF METAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM, TITANIUM, HAFNIUM, THORIUM AND MIXTURES THEREOF: ADDING AN AQUEOUS SOLUTION OF A SILICATE AND PHOSPHORIC ACID ANIONS TO SAID SALT SOLUTION, THE MOLAR RATIO OF SAID PHOSPHORIC ACID IONS: METAL IONS: SILICATE IONS RANGING FROM 40:31:51 TO 40:31:10,000: ACIDIFYING SAID AQUEOUS SALT SOLUTION WHEREBY A PRECIPITATE FORMS; SEPARATING SAID PRECIPITATE FROM THE AQUEOUS SOLUTION; WASHING AND DRYING SAID PRECIPITATE; ACIDIFYING THE AQUEOUS PLUTONIUM-CONTAINING SOLUTION TO MAKE IT FROM 1 TO 3 M IN ACID, SAID ACID BEING SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID AND HYDROCHLORIC ACID, AND ALSO FROM 0.02 TO 0.4 M IN PHOSPHORIC ACID; PASSING SAID SOLUTION OVER SAID PRECIPITATE WHEREBY THE PLUTONIUM VALUES ARE ADSORBED BY SAID PRECIPITATE: AND SEPARATING THE PRECIPITATE FROM THE AQUEOUS 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) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |