US2965475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of metals
Assignee: Union Carbide Corp
•
Filing: 1960-01-13
•
Granted: 1960-12-20
•
Expires: 1980-01-13
Abstract
No abstract record available.
Inventors
- 👤 Benjamin J Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:09
CPC Classifications
C; C22; C22B; C22B26/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A PROCESS FOR THE PRODUCTION OF A METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM, BARIUM, STRONTIUM, AND LITHIUM WHICH COMPRISES THERMALLY DECOMPOSING AN IMPURE CARBIDE OF SAID SELECTED METAL TO PRODUCE A GASEOUS MIXTURE OF ELEMENTAL METAL AND CARBON MONOXIDE, PASSING SAID GASEOUS MIXTURE TO A PURIFYING ZONE MAINTAINED AT A TEMPERATURE ABOVE THE CONDENSATION TEMPERATURE OF SAID ELEMENTAL METAL, SAID PURIFYING ZONE CONTAINING AT LEAST ONE ACTIVE REFRACTORY METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, REACTING SAID CARBON MONOXIDE WITH SAID ACTIVE REFRACTORY METAL IN SAID PURIFYING ZONE TO FORM AT LEAST ONE SOLID COMPOUND AT THE TEMPERATURE OF SAID PURIFYING ZONE, AND PASSING SAID GASEOUS ELEMENTAL METAL TO A COOLING ZONE MAINTAINED AT A TEMPERATURE BELOW THE CONDENSATION TEMPERATURE OF SAID METAL TO RECOVER SAID ELEMENTAL METAL.
Claim 2
Dependent Claim
133 words
A PROCESS FOR THE PRODUCTION OF A METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM, BARIUM, STRONTIUM, AND LITHIUM WHICH COMPRISES THERMALLY DECOMPOSING AN IMPURE CARBIDE OF SAID SELECTED METAL TO PRODUCE A GASEOUS MIXTURE OF ELEMENTAL METAL AND CARBON MONOXIDE, PASSING SAID GASEOUS MIXTURE TO A PURIFYING ZONE MAINTAINED AT A TEMPERATURE ABOVE THE CONDENSATION TEMPERATURE OF SAID ELEMENTAL METAL, SAID PURIFYING ZONE CONTAINING AT LEAST ONE ACTIVE REFRACTORY METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, REACTING SAID CARBON MONOXIDE WITH SAID ACTIVE REFRACTORY METAL IN SAID PURIFYING ZONE TO FORM AT LEAST ONE SOLID COMPOUND AT THE TEMPERATURE OF SAID PURIFYING ZONE, AND PASSING SAID GASEOUS ELEMENTAL METAL TO A COOLING ZONE MAINTAINED AT A TEMPERATURE BELOW THE CONDENSATION TEMPERATURE OF SAID METAL TO RECOVER SAID ELEMENTAL METAL.
References Cited (Backward Citations)
US2456935A
Cited
US2681847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |