US3152864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aluminium chloride
Assignee: National Smelting Co Ltd
•
Filing: 1963-02-25
•
Granted: 1964-10-13
•
Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Derham Leslie Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:57
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/48; C01F7/56; C01F7/58; C01P; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD OF PREPARING ANHYDROUS ALUMINUM CHLORIDE WHICH COMPRISES: RETAINING A MOLTEN ZINC-ALUMINIUM ALLOY AT A TEMPERATURE OF FROM 430*C. TO 500*C. IN A VESSEL DIVIDED INTO TWO PORTIONS BY AN UNDERFLOW BAFFLE; PASSING CHLORINE GAS INTO ONE PORTION OF THE VESSEL TO FORM ALUMINIUM CHLORIDE VAPOUR; ALLOWING SAID ALUMINIUM CHLORIDE VAPOUR TO PASS UPWARDS THROUGHA LAYER OF PIECES OF ALUMINIUM TO RID IT OF TRACES OF FREE CHLORINE, COOLING THE MOLTEN ZINC-ALUMINIUM ALLOY IN THE OTHER PORTION OF
Claim 2
Independent Claim
79 words
A METHOD OF PREPARING ANHYDROUS ALUMINUM CHLORIDE WHICH COMPRISES: RETAINING A MOLTEN ZINC-ALUMINIUM ALLOY AT A TEMPERATURE OF FROM 430*C. TO 500*C. IN A VESSEL DIVIDED INTO TWO PORTIONS BY AN UNDERFLOW BAFFLE; PASSING CHLORINE GAS INTO ONE PORTION OF THE VESSEL TO FORM ALUMINIUM CHLORIDE VAPOUR; ALLOWING SAID ALUMINIUM CHLORIDE VAPOUR TO PASS UPWARDS THROUGHA LAYER OF PIECES OF ALUMINIUM TO RID IT OF TRACES OF FREE CHLORINE, COOLING THE MOLTEN ZINC-ALUMINIUM ALLOY IN THE OTHER PORTION OF
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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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |