US3116971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the concurrent production of alkali metal aluminate and hydrogen fluoride
Assignee: Reynolds Metals Co
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Filing: 1961-02-07
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Granted: 1964-01-07
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Expires: 1981-02-07
Abstract
No abstract record available.
Inventors
- 👤 Kizhakke G Hrishikesan
- 👤 Jr Fredrick Earl Adkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:20
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/19; C01B7/191; C01B7/192; C01F; C01F7/00; C01F7/02; C01F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
METHOD FOR THE CONCURRENT PRODUCTION OF ALKALI METAL ALUMINATE AND HYDROGEN FLUORIDE, WHICH COMPRISES HEATING A MIXTURE OF AN ALKALINE EARTH METAL FLUORIDE SILICA, ALUMINA, AND A SOURCE OF AN ALKALI METAL MONOXIDE, IN THE SOLID PHASE AT A TEMPERATURE ABOVE ABOUT 1000*C. IN THE PRESENCE OF SUFFICIENT WATER VAPOR TO CAUSE HYDROTHERMAL DECOMPOSITION OF THE FLUORIDE, TO FORM ALKALI METAL ALUMINATE, DI-ALKALINE EARTH METAL SILICATE, AND HYDROGEN FLUORIDE; AND SEPARATING THE HYDROGEN FLUORIDE.
Claim 2
Dependent Claim
74 words
METHOD FOR THE CONCURRENT PRODUCTION OF ALKALI METAL ALUMINATE AND HYDROGEN FLUORIDE, WHICH COMPRISES HEATING A MIXTURE OF AN ALKALINE EARTH METAL FLUORIDE SILICA, ALUMINA, AND A SOURCE OF AN ALKALI METAL MONOXIDE, IN THE SOLID PHASE AT A TEMPERATURE ABOVE ABOUT 1000*C. IN THE PRESENCE OF SUFFICIENT WATER VAPOR TO CAUSE HYDROTHERMAL DECOMPOSITION OF THE FLUORIDE, TO FORM ALKALI METAL ALUMINATE, DI-ALKALINE EARTH METAL SILICATE, AND HYDROGEN FLUORIDE; AND SEPARATING THE HYDROGEN FLUORIDE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |