US2969852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing niobium oxychloride from niobium pentachloride
Assignee: EIDP Inc
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Filing: 1959-06-18
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Granted: 1961-01-31
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Expires: 1979-06-18
Abstract
No abstract record available.
Inventors
- 👤 Howard W Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:36
CPC Classifications
C; C01; C01G; C01G33/00; C01P; C01P2006/00; C01P2006/12; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR THE REMOVAL OF NIOBIUM OXYCHLORIDE OCCURRING AS A CONTAMINANT IN NIOBIUM PENTACHLORIDE, SAID PROCESS COMPRISING PASSING THE MIXED CHLORIDES THROUGH A BED OF ACTIVATED CARBON AT A TEMPERATURE IN THE RANGE OF ABOUT 205*C. TO ABOUT 500*C. TO EFFECT PREFERENTIAL ADSORPTION OF THE NIOBIUM OXYCHLORIDE ON THE ACTIVATED CARBON.
Claim 2
Dependent Claim
52 words
A PROCESS FOR THE REMOVAL OF NIOBIUM OXYCHLORIDE OCCURRING AS A CONTAMINANT IN NIOBIUM PENTACHLORIDE, SAID PROCESS COMPRISING PASSING THE MIXED CHLORIDES THROUGH A BED OF ACTIVATED CARBON AT A TEMPERATURE IN THE RANGE OF ABOUT 205*C. TO ABOUT 500*C. TO EFFECT PREFERENTIAL ADSORPTION OF THE NIOBIUM OXYCHLORIDE ON THE ACTIVATED CARBON.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |