US2625472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of aluminum from aluminum alloys
Assignee: Alcan Research and Development Ltd
•
Filing: 1949-08-12
•
Granted: 1953-01-13
•
Expires: 1969-08-12
Abstract
No abstract record available.
Inventors
- 👤 Scheuer Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:08
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/0038; C22B21/0046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR DISTILLING ALUMINUM FROM MOLTEN ALUMINIUM CONTAINING MATERIAL COMPRISING DRAWING MOLTEN ALUMINIUM CONTAINING MATERIAL FROM A CONTAINER MAINTAINED AT ATMOSPHERIC PRESSURE, PASSING IT THROUGH A REACTION CHAMBER IN THE FORM OF A SHOWER, SAID REACTION CHAMBER BEING MAINTAINED AT SUB-ATMOSPHERIC PRESSURE, TREATING THE MOLTEN MATERIAL IN THE REACTION CHAMBER WITH A STREAM OF METAL HALIDE VAPOUR WHILST PASSING THROUGH SAID REACTION CHAMBER TO REMOVE A PART OF THE ALUMINIUM THEREFROM, COLLECTING THE REMAINIG MOLTEN MATERIAL IN A SECOND CONTAINER MAINTAINED AT ATMOSPHERIC PRESSURE, COOLING SAID MATERIAL TO CAUSE PRECIPITATION OF RELATIVELY HIGH MELTING POINT CONSTITUENTS THEREFROM AND RECIRCULATING THE REMAINING MOLTEN MATERIAL TO SAID FIRST CONTAINER.
Claim 2
Dependent Claim
108 words
A PROCESS FOR DISTILLING ALUMINUM FROM MOLTEN ALUMINIUM CONTAINING MATERIAL COMPRISING DRAWING MOLTEN ALUMINIUM CONTAINING MATERIAL FROM A CONTAINER MAINTAINED AT ATMOSPHERIC PRESSURE, PASSING IT THROUGH A REACTION CHAMBER IN THE FORM OF A SHOWER, SAID REACTION CHAMBER BEING MAINTAINED AT SUB-ATMOSPHERIC PRESSURE, TREATING THE MOLTEN MATERIAL IN THE REACTION CHAMBER WITH A STREAM OF METAL HALIDE VAPOUR WHILST PASSING THROUGH SAID REACTION CHAMBER TO REMOVE A PART OF THE ALUMINIUM THEREFROM, COLLECTING THE REMAINIG MOLTEN MATERIAL IN A SECOND CONTAINER MAINTAINED AT ATMOSPHERIC PRESSURE, COOLING SAID MATERIAL TO CAUSE PRECIPITATION OF RELATIVELY HIGH MELTING POINT CONSTITUENTS THEREFROM AND RECIRCULATING THE REMAINING MOLTEN MATERIAL TO SAID FIRST CONTAINER.
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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) | 1956-01-13 | 1956-07-14 | 1957-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-13 | 1960-07-14 | 1961-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-13 | 1964-07-14 | 1965-01-13 | $7700.00 | Window Closed / Lapsed |