US2845341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for purifying refractory metal subchloride compositions
Assignee: EIDP Inc
•
Filing: 1955-04-15
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Granted: 1958-07-29
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Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Marshall Edwin Randolph
- 👤 Monson Leon Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:44
CPC Classifications
C; C01; C01G; C01G1/00; C01G1/06; C01G25/00; C01G25/04; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1263; C22B34/1268; C22B34/1272
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD FOR PURIFYING A MOLTEN IMPURITY-CONTAMINATED SALT COMPOSITION COMPRISING A SUBCHLORIDE OF A GROUP IV-A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM AND HAFNIUM AND A CHLORIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS, WHICH COMPRISES ADJUSTING THE AVERAGE VALENCE OF THE GROUP IV-A METAL PRESENT IN SAID COMPOSITION THROUGH REACTION WITH A REDUCING AGENT TO A VALUE RANGING FROM 2.0 TO 2.9 TO INSOLUBILIZE SOLUBLE IMPURITIES PRESENT THEREIN, EFFECTING SAID REACTION AT A TEMPERATURE BETWEEN THE MELTING POINT AND BELOW THE VOLATILIZATION TEMPERATURE OF SAID COMPOSITION, AND THEN REMOVING THE INSOLUBILIZED MATERIAL FROM THE COMPOSITION.
Claim 2
Independent Claim
106 words
A METHOD FOR PURIFYING A MOLTEN IMPURITY-CONTAMINATED SALT COMPOSITION COMPRISING A SUBCHLORIDE OF A GROUP IV-A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM AND HAFNIUM AND A CHLORIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS, WHICH COMPRISES ADJUSTING THE AVERAGE VALENCE OF THE GROUP IV-A METAL PRESENT IN SAID COMPOSITION THROUGH REACTION WITH A REDUCING AGENT TO A VALUE RANGING FROM 2.0 TO 2.9 TO INSOLUBILIZE SOLUBLE IMPURITIES PRESENT THEREIN, EFFECTING SAID REACTION AT A TEMPERATURE BETWEEN THE MELTING POINT AND BELOW THE VOLATILIZATION TEMPERATURE OF SAID COMPOSITION, AND THEN REMOVING THE INSOLUBILIZED MATERIAL FROM THE COMPOSITION.
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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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |