Patent US2914398A successfully refreshed from Google Patents.
US2914398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of aluminum in subhalide distillation
Assignee: Alcan Research and Development Ltd
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Filing: 1957-08-09
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Granted: 1959-11-24
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Expires: 1977-08-09
Abstract
No abstract record available.
Inventors
- 👤 Alan H Johnston
- 👤 Southam Frederick William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:56
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/0038; C22B21/0046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
PROCEDURE FOR RECOVERING METALLIC ALUMINUM FROM ALUMINUM SUBHALIDE GAS, COMPRISING ESTABLISHING A BODY OF MOLTEN ALUMINUM, CONDUCTING THE GAS INTO VOGROUS CONTACT WITH MOLTEN ALUMINUM AT ONE LOCALLY OF SAID BODY, AND REMOVING HEAT FROM THE MOLTEN ALUMINUM TO REDUCE THE TEMPERATURE OF THE GAS WHICH COMES INTO SAID CONTACT, FOR DECOMPOSING F THE GAS TO DEPOSIT ALUMINUM IN THE BODY, BY MAINTAINING MOLTEN SALT IN HEATREMOVING CONTACT WITH THE MOLTEN ALUMINUM AT ANOTHER LOCALITY OF THE BODY, AND COOLING SAID MOLTEN SALT, WHILE CONFINING SAID MOLTEN SALT AGAINST FLOW TO SAID FIRST-MENNUM THROUGH BOTH LOCALLITIES TO PROMOTE REMOVEL OF HEAT THEREFROM BY THE SALT.
Claim 2
Dependent Claim
105 words
PROCEDURE FOR RECOVERING METALLIC ALUMINUM FROM ALUMINUM SUBHALIDE GAS, COMPRISING ESTABLISHING A BODY OF MOLTEN ALUMINUM, CONDUCTING THE GAS INTO VOGROUS CONTACT WITH MOLTEN ALUMINUM AT ONE LOCALLY OF SAID BODY, AND REMOVING HEAT FROM THE MOLTEN ALUMINUM TO REDUCE THE TEMPERATURE OF THE GAS WHICH COMES INTO SAID CONTACT, FOR DECOMPOSING F THE GAS TO DEPOSIT ALUMINUM IN THE BODY, BY MAINTAINING MOLTEN SALT IN HEATREMOVING CONTACT WITH THE MOLTEN ALUMINUM AT ANOTHER LOCALITY OF THE BODY, AND COOLING SAID MOLTEN SALT, WHILE CONFINING SAID MOLTEN SALT AGAINST FLOW TO SAID FIRST-MENNUM THROUGH BOTH LOCALLITIES TO PROMOTE REMOVEL OF HEAT THEREFROM BY THE SALT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |