Patent US3004823A successfully refreshed from Google Patents.
US3004823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating neptunium by liquid-liquid extraction
Assignee: Individual
•
Filing: 1959-07-15
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Granted: 1961-10-17
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Expires: 1979-07-15
Abstract
No abstract record available.
Inventors
- 👤 Donald F Peppard
- 👤 George W Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:37
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/001
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
A METHOD FOR SEPARATING NP IV VALUES IN AN AQUEOUS SOLUTION CONTAINING VALUES OF THE GROUP CONSISTING OF U VI, PR III, CM III, AM III, Y III, AND LANTHANIDE III, COMPRISING ACIDIFYING THE AQUEOUS SOLUTION BY HCL BETWEEN ABOUT 6 F AND 12F, THEN BRINGING THE AQUEOUS SOLUTION INTO CONTACT WITH A SUBSTANTIALLY IMMISCIBLE ORGANIC LIQUID SOLUTION CONTAINING MONO(2-ETHYLHEXYL)ORTHPHOSPHORIC ACID IN A SOLVENT, AGITATING THE TWO SOLUTIONS TOGETHER, DISCONTINUING THE AGITATION FOR A SUFFICIENT TIME TO PERMIT SEPARATION INTO A DISCRETE AQUEOUS PHASE AND A DISCRETE ORGANIC LIQUID PHASE, AND THEN REMOVING THE ORGANIC LIQUID PHASE CONTAINING THE PREPONDERANCE OF THE NEPTUNIUM VALUES FROM THE AQUEOUS PHASE.
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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |