Patent US4148456A successfully refreshed from Google Patents.
US2907628A
Expired / Lapsed
US
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Neptunium solvent extraction process
Assignee: Individual
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Filing: 1949-06-22
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Granted: 1959-10-06
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Expires: 1969-06-22
Abstract
No abstract record available.
Inventors
- 👤 Lyle R Dawson
- 👤 Paul R Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:00
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN THE PROCESS OF SEPARATING NEPTUNIUM VALUES FROM AN AQUEOUS SOLUTION COMPRISING NITRIC ACID, NITRATES OF FISSION PRODUCTS, AND NEPTUNIUM NITRATE WHEREIN A SALTING-OUT AGENT IS ADDED, AN OXIDIZING AGENT IS ADDED TO RAISE THE NEPTUNIUM TO THE HEXAVALENT STATE, AND THEN BRINGING THE AQUEOUS SOLUTION INTO CONTACT WITH A SUBSTANTIALLY WATER-IMMISCIBLE LIQUID ORGANIC SOLVENT AND THEN SEPARATING THE RESULTING AQUEOUS PHASE AND THE RESULTING ORGANIC SOLVENT EXTRACT PHASE CONTAINING SAID NEPTUNIUM NITRATE, THE IMPROVEMENT CONSISTING OF CARRYING OUT SAID CONTACT AT A NITRIC ACID CONCENTRATION OF ABOUT 2 N.
Claim 2
Dependent Claim
90 words
IN THE PROCESS OF SEPARATING NEPTUNIUM VALUES FROM AN AQUEOUS SOLUTION COMPRISING NITRIC ACID, NITRATES OF FISSION PRODUCTS, AND NEPTUNIUM NITRATE WHEREIN A SALTING-OUT AGENT IS ADDED, AN OXIDIZING AGENT IS ADDED TO RAISE THE NEPTUNIUM TO THE HEXAVALENT STATE, AND THEN BRINGING THE AQUEOUS SOLUTION INTO CONTACT WITH A SUBSTANTIALLY WATER-IMMISCIBLE LIQUID ORGANIC SOLVENT AND THEN SEPARATING THE RESULTING AQUEOUS PHASE AND THE RESULTING ORGANIC SOLVENT EXTRACT PHASE CONTAINING SAID NEPTUNIUM NITRATE, THE IMPROVEMENT CONSISTING OF CARRYING OUT SAID CONTACT AT A NITRIC ACID CONCENTRATION OF ABOUT 2 N.
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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |