US2847278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precipitation of zirconium, niobium, and ruthenium from aqueous solutions
Assignee: Individual
•
Filing: 1957-02-21
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Granted: 1958-08-12
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Expires: 1977-02-21
Abstract
No abstract record available.
Inventors
- 👤 Archie S Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:59
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/003; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/306; C01G55/00; C01G55/001; C01G56/00; C01G56/001; G; G21; G21C; G21C19/00; G21C19/42; G21C19/44; G21C19/46; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02P; Y02P10/00; Y02P10/20; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS OF SIMULTANEOUSLY REMOVING ZIRCONIUM, NIOBIUM AND RUTHENIUM VALUES FROM AN AQUEOUS NITRIC ACID SOLUTION WITHOUT SUBSTANTIAL VOLATILIZATION OF RUTHENIUM, COMPRISING ADDING A WATER-SOLUBLE SYMMETRICAL LOWER DIALKYL KETONE TO SAID SOLUTION, INCORPORATING A MANGANESE DIOXIDE PRECIPITATE INTO SAID SOLUTION WHEREBY ZIRCONIUM, NIOBIUM AND RUTHENIUM VALUES ARE CARRIED ON SAID PRECIPITATE, AND SEPARATING SAID PRECIPITATE FROM SAID AQUEOUS SOLUTION.
Claim 2
Dependent Claim
59 words
A PROCESS OF SIMULTANEOUSLY REMOVING ZIRCONIUM, NIOBIUM AND RUTHENIUM VALUES FROM AN AQUEOUS NITRIC ACID SOLUTION WITHOUT SUBSTANTIAL VOLATILIZATION OF RUTHENIUM, COMPRISING ADDING A WATER-SOLUBLE SYMMETRICAL LOWER DIALKYL KETONE TO SAID SOLUTION, INCORPORATING A MANGANESE DIOXIDE PRECIPITATE INTO SAID SOLUTION WHEREBY ZIRCONIUM, NIOBIUM AND RUTHENIUM VALUES ARE CARRIED ON SAID PRECIPITATE, AND SEPARATING SAID PRECIPITATE FROM SAID AQUEOUS SOLUTION.
References Cited (Backward Citations)
US2796424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |