Patent US3103472A successfully refreshed from Google Patents.
US3103472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic production of aluminum
Assignee: —
•
Filing: —
•
Granted: 1963-09-10
•
Expires: 1980-09-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:10
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR THE PRODUCTION OF ALUMINUM BY FUSION ELECTROLYSIS COMPRISING ELECTROLYZING A FUSED SALT BATH COMPRISING AT LEAST ONE OF THE GROUP CONSISTING OF THE ALKALI AND ALKALINE EARTH HALIDES, SAID BATH HAVING A LESSER DENSITY THAN MOLTEN ALUMINUM, SAID ELECTROLYSIS BEING EFFECTED BETWEEN AN INSOLUBLE ANODE AND A LIQUID ALUMINUM CATHODE SUBMERGED IN SAID ELECTROLYTIC, SIMULTANEOUSLY FEEDING GASEOUS ALUMINUM HALIDE BELOW THE SURFACE OF SAID CATHODE, AT A RATE TO CONFINE THE ALUMINUM HALIDE ESSENTIALLY TO THE LIQUID CATHODE, REDUCING THE ALUMINUM ION TO ALYMINUM SOLELY IN SAID CATHODE TO MAINTAIN THE FUSED SALT BATH FREE OF ALUMINUM HALIDE AND PASSING THE HALIDE ION TO SAID BATH, THEREBY DISCHARGING A CORRESPONDING VOLATILE HALIDE GAS AT SAID INSOLUBLE ANODE AND ACCUMULATING ALUMINUM AT THE BOTTOM OF SAID ELECTROLYTIC CELL.
Claim 2
Dependent Claim
130 words
A PROCESS FOR THE PRODUCTION OF ALUMINUM BY FUSION ELECTROLYSIS COMPRISING ELECTROLYZING A FUSED SALT BATH COMPRISING AT LEAST ONE OF THE GROUP CONSISTING OF THE ALKALI AND ALKALINE EARTH HALIDES, SAID BATH HAVING A LESSER DENSITY THAN MOLTEN ALUMINUM, SAID ELECTROLYSIS BEING EFFECTED BETWEEN AN INSOLUBLE ANODE AND A LIQUID ALUMINUM CATHODE SUBMERGED IN SAID ELECTROLYTIC, SIMULTANEOUSLY FEEDING GASEOUS ALUMINUM HALIDE BELOW THE SURFACE OF SAID CATHODE, AT A RATE TO CONFINE THE ALUMINUM HALIDE ESSENTIALLY TO THE LIQUID CATHODE, REDUCING THE ALUMINUM ION TO ALYMINUM SOLELY IN SAID CATHODE TO MAINTAIN THE FUSED SALT BATH FREE OF ALUMINUM HALIDE AND PASSING THE HALIDE ION TO SAID BATH, THEREBY DISCHARGING A CORRESPONDING VOLATILE HALIDE GAS AT SAID INSOLUBLE ANODE AND ACCUMULATING ALUMINUM AT THE BOTTOM OF SAID ELECTROLYTIC CELL.
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) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |