US2754199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recovering aluminous metal from freshly skimmed dross
Assignee: Alcoa Corp
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Filing: 1952-08-30
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Granted: 1956-07-10
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Expires: 1972-08-30
Abstract
No abstract record available.
Inventors
- 👤 Philip T Stroup
- 👤 James D Dowd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:18
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/0038; C22B21/0069; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF TREATING HOT ALUMINOUS DROSS CONTAINING LIQUID ALUMINOUS METAL TO RECOVER THE METAL IN LIQUID FORM COMPRISING SKIMMING THE DROSS FROM AN ALUMINOUS METAL MELT, TRANSFERRING THE DROSS WITHOUT SUBSTANTIAL DROP IN TEMPERATURE TO A CONFINED SPACE, PROVIDING A NON-OXIDIZING ATMOSPHERE IN SAID SPACE CONTAINING ALUMINUM CHLORIDE AS THE PRINCIPAL COMPONENT, AGITATING SAID DROSS UNDER SAID ATMOSPHERE, HALTING THE AGITATION AND WITHDRAWING THE ACCUMULATED LIQUID METAL.
Claim 2
Independent Claim
68 words
THE METHOD OF TREATING HOT ALUMINOUS DROSS CONTAINING LIQUID ALUMINOUS METAL TO RECOVER THE METAL IN LIQUID FORM COMPRISING SKIMMING THE DROSS FROM AN ALUMINOUS METAL MELT, TRANSFERRING THE DROSS WITHOUT SUBSTANTIAL DROP IN TEMPERATURE TO A CONFINED SPACE, PROVIDING A NON-OXIDIZING ATMOSPHERE IN SAID SPACE CONTAINING ALUMINUM CHLORIDE AS THE PRINCIPAL COMPONENT, AGITATING SAID DROSS UNDER SAID ATMOSPHERE, HALTING THE AGITATION AND WITHDRAWING THE ACCUMULATED LIQUID METAL.
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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |