US2760858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing metals in purified form
Assignee: National Research Corp
•
Filing: 1951-10-22
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Granted: 1956-08-28
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Expires: 1971-10-22
Abstract
No abstract record available.
Inventors
- 👤 Gordon R Findlay
- 👤 Pietro William O Di
- 👤 Ralph S Hood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:03
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE PROCESS OF PURIFYING A READILY OXIDIZED METAL POWDER SUSPENDED IN A MOLTEN SALT FROM THE GROUP CONSISTING OF ALKALI METAL HALIDES AND THE ALKALINE EARTH METAL HALIDES, SAID METAL POWDER BEING SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, SAID PROCESS COMPRISING THE STEPS OF MECHANICALLY SEPARATING SAID METAL POWDER FROM THE BULK OF SAID MOLTEN SALT, WASHING THE RESULTANT CONCENTRATED SUSPENSION OF METAL POWDER IN A BATH COMPRISING A SUBSTANTIAL AMOUNT OF A MOLTEN ALUMINUM TRICHLORIDE, SEPARATING THE BULK OF SAID DILUTE SOLUTION OF SAID WASH SALT FROM SAID METAL POWDER, HEATING THE RESULTANT METAL POWDER TO DRIVE OFF RESIDUAL ALUMINUM TRICHLORIDE, AND CONSOLIDATING THE THUS PURIFIED METAL POWDER PRIOR TO EXPOSURE TO AIR.
Claim 2
Dependent Claim
117 words
THE PROCESS OF PURIFYING A READILY OXIDIZED METAL POWDER SUSPENDED IN A MOLTEN SALT FROM THE GROUP CONSISTING OF ALKALI METAL HALIDES AND THE ALKALINE EARTH METAL HALIDES, SAID METAL POWDER BEING SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, SAID PROCESS COMPRISING THE STEPS OF MECHANICALLY SEPARATING SAID METAL POWDER FROM THE BULK OF SAID MOLTEN SALT, WASHING THE RESULTANT CONCENTRATED SUSPENSION OF METAL POWDER IN A BATH COMPRISING A SUBSTANTIAL AMOUNT OF A MOLTEN ALUMINUM TRICHLORIDE, SEPARATING THE BULK OF SAID DILUTE SOLUTION OF SAID WASH SALT FROM SAID METAL POWDER, HEATING THE RESULTANT METAL POWDER TO DRIVE OFF RESIDUAL ALUMINUM TRICHLORIDE, AND CONSOLIDATING THE THUS PURIFIED METAL POWDER PRIOR TO EXPOSURE TO AIR.
References Cited (Backward Citations)
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Cited
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Cited
GB253191A
Cited
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Cited
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Cited
US2564337A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |