Patent US2744060A successfully refreshed from Google Patents.
US2744060A
Expired / Lapsed
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Process for separating hafnium tetrachloride from zirconium tetrachloride
Assignee: EIDP Inc
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Filing: 1952-10-09
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Granted: 1956-05-01
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Expires: 1972-10-09
Abstract
No abstract record available.
Inventors
- 👤 Russell B Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:35
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS FOR SEPARATING ZIRCONIUM AND HAFNIUM HALIDES FROM VAPOROUS MIXTURES WHICH COMPRISES CONTACTING THE MIXED HALIDE VAPORS IN A SEPARATING ZONE WITH A MOLTEN ALKALI METAL HALIDE SALT IN WHICH SAID HALIDES ARE SOLUBLE, AND SEPARATELY RECOVERING FROM SAID ZONE THE SEPARATED HAFNIUM AND ZIRCONIUM HALIDES.
Claim 2
Dependent Claim
47 words
A PROCESS FOR SEPARATING ZIRCONIUM AND HAFNIUM HALIDES FROM VAPOROUS MIXTURES WHICH COMPRISES CONTACTING THE MIXED HALIDE VAPORS IN A SEPARATING ZONE WITH A MOLTEN ALKALI METAL HALIDE SALT IN WHICH SAID HALIDES ARE SOLUBLE, AND SEPARATELY RECOVERING FROM SAID ZONE THE SEPARATED HAFNIUM AND ZIRCONIUM HALIDES.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
US2533021A
Cited
US2618531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |