US3107148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of hydrogen fluoride from its azeotrope with water
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1960-11-14
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Granted: 1963-10-15
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Brooks Lionel Hepworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:00
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/19; C01B7/191
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD OF RECOVERING HYDROGEN FLUORIDE FROM ITS AZEOTROPE WITH WATER COMPRISING PASSING A MIXTURE OF THE COMPOSITION OF THE AZEOTROPE IN A VAPOR STATE THROUGH A BED OF METAL OXIDE REACTABLE WITH HYDROGEN FLUORIDE, WITH SAID BED BEING MAINTAINED AT A TEMPERATURE SUFFICIENT TO CONVERT SUBSTANTIALLY ALL OF SAID METAL OXIDE INTO THE CORRESPONDING METAL FLUORIDE, ELEVATING THE TEMPERATURE OF
Claim 2
Independent Claim
61 words
A METHOD OF RECOVERING HYDROGEN FLUORIDE FROM ITS AZEOTROPE WITH WATER COMPRISING PASSING A MIXTURE OF THE COMPOSITION OF THE AZEOTROPE IN A VAPOR STATE THROUGH A BED OF METAL OXIDE REACTABLE WITH HYDROGEN FLUORIDE, WITH SAID BED BEING MAINTAINED AT A TEMPERATURE SUFFICIENT TO CONVERT SUBSTANTIALLY ALL OF SAID METAL OXIDE INTO THE CORRESPONDING METAL FLUORIDE, ELEVATING THE TEMPERATURE OF
References Cited (Backward Citations)
US1293703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |