US2703752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for production of refractory metals
Assignee: Kennecott Corp
•
Filing: 1951-01-20
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Granted: 1955-03-08
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Expires: 1971-01-20
Abstract
No abstract record available.
Inventors
- 👤 Glasser Julian
- 👤 Clifford A Hampel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:47
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0291; C22B34/00; C22B5/00; C22B5/02; C22B5/04; C22B5/06; C22B60/0204; C22B60/0213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE METHOD OF RECOVERING THE ELEMENTAL METAL FROM A HALIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZIRONIUM, HATNIUM, THORIUM, VANADIUM, COLUMBIUM, TANTALUM, CHROMIUM, MOLYDBDENUM, TUNGSTEN AND URANIUN ALKALI METAL AMALGAM IN THE PRESENCE OF AN INERT AN ALKALI METAL AMALGAM IN THE PRESENCE OF AN INERT GAS, THE ALKALI METAL CONTENT OF SAID AMALGAM BEING SUF-
Claim 2
Independent Claim
59 words
THE METHOD OF RECOVERING THE ELEMENTAL METAL FROM A HALIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZIRONIUM, HATNIUM, THORIUM, VANADIUM, COLUMBIUM, TANTALUM, CHROMIUM, MOLYDBDENUM, TUNGSTEN AND URANIUN ALKALI METAL AMALGAM IN THE PRESENCE OF AN INERT AN ALKALI METAL AMALGAM IN THE PRESENCE OF AN INERT GAS, THE ALKALI METAL CONTENT OF SAID AMALGAM BEING SUF-
References Cited (Backward Citations)
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Cited
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US2618549A
Cited
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Cited
US2618550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-07 | 1958-09-06 | 1959-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-07 | 1962-09-06 | 1963-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-07 | 1966-09-06 | 1967-03-08 | $7700.00 | Window Closed / Lapsed |