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US2726142A
Expired / Lapsed
US
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Production of hydrogen chloride from chlorides
Assignee: United Steel Companies Ltd
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Filing: 1952-12-29
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Granted: 1955-12-06
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Expires: 1972-12-29
Abstract
No abstract record available.
Inventors
- 👤 Reeve Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:33
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01; C01B7/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A METHOD OF OBTAINING HYDROGEN CHLORIDE FROM AT LEAST ONE CHLORIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS, SAID CHLORIDE BEING PRESENT IN A SILICIOUS TAILING RESULTING FROM THE PRODUCTION AND EXTRACTION OF FERRIC CHLORIDE FROM A SILICIOUS IRON ORE BY TREATMENT WITH HCL, THE STEPS WHICH COMPRISE TREATING SAID TAILING WITH A GAS MIXTURE CONSISTING OF STEAM AND AT LEAST ONE GAS SELECTED FROM THE GROUP CONSISTING OF AIR, INERT GAS AND WASTE COMBUSTION GASES THE TOTAL STEAM CONTENT OF THE MIXTURE NOT EXCEEDING 40% AT A TEMPERATURE BETWEEN 930* AND 1650* F. TO HYDROLYSE SAID CHLORIDE AND CONDENSING THE GAS FORMED.
Claim 2
Dependent Claim
111 words
IN A METHOD OF OBTAINING HYDROGEN CHLORIDE FROM AT LEAST ONE CHLORIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS, SAID CHLORIDE BEING PRESENT IN A SILICIOUS TAILING RESULTING FROM THE PRODUCTION AND EXTRACTION OF FERRIC CHLORIDE FROM A SILICIOUS IRON ORE BY TREATMENT WITH HCL, THE STEPS WHICH COMPRISE TREATING SAID TAILING WITH A GAS MIXTURE CONSISTING OF STEAM AND AT LEAST ONE GAS SELECTED FROM THE GROUP CONSISTING OF AIR, INERT GAS AND WASTE COMBUSTION GASES THE TOTAL STEAM CONTENT OF THE MIXTURE NOT EXCEEDING 40% AT A TEMPERATURE BETWEEN 930* AND 1650* F. TO HYDROLYSE SAID CHLORIDE AND CONDENSING THE GAS FORMED.
References Cited (Backward Citations)
US1533009A
Cited
US1923324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |