US3011866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of columbium and tantalum
Assignee: Individual
•
Filing: 1958-01-10
•
Granted: 1961-12-05
•
Expires: 1978-01-10
Abstract
No abstract record available.
Inventors
- 👤 James O Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:52
CPC Classifications
C; C01; C01G; C01G33/00; C01P; C01P2006/00; C01P2006/80; C01P2006/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE PROCESS OF SEPARATING COLUMBIUM VALUES FROM TANTALUM VALUES AND FROM THEIR NATURAL ORES WHICH INCLUDES OTHER METALS COMPRISING TREATING AN INTIMATE MIXTURE OF SUCH AN ORE AND CARBON WITH CHLORINE GAS AT ABOUT 500*C., CONDENSING THE COLUMBIUM AND TANTALIUM REACTION PRODUCTS OF THE RESULTANT VOLATILE COMPOSITION, TREATING THE CONDENSED COLUMBIUM AND TANTALUM PORTIONS WITH CARBON MONOXIDE GAS AT ABOUT 500*C., RECOVERING THE RESULTANT VOLATILE COMPOSITION THEREOF AS A COLUMBIUM PRODUCT, AND RECOVERING THE RESULTANT NON-VOLATILE COMPOSITION AS A TANTALUM PRODUCT.
Claim 2
Dependent Claim
81 words
THE PROCESS OF SEPARATING COLUMBIUM VALUES FROM TANTALUM VALUES AND FROM THEIR NATURAL ORES WHICH INCLUDES OTHER METALS COMPRISING TREATING AN INTIMATE MIXTURE OF SUCH AN ORE AND CARBON WITH CHLORINE GAS AT ABOUT 500*C., CONDENSING THE COLUMBIUM AND TANTALIUM REACTION PRODUCTS OF THE RESULTANT VOLATILE COMPOSITION, TREATING THE CONDENSED COLUMBIUM AND TANTALUM PORTIONS WITH CARBON MONOXIDE GAS AT ABOUT 500*C., RECOVERING THE RESULTANT VOLATILE COMPOSITION THEREOF AS A COLUMBIUM PRODUCT, AND RECOVERING THE RESULTANT NON-VOLATILE COMPOSITION AS A TANTALUM PRODUCT.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |